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# Class 10 Maths MCQ’s with Solutions -Areas Related to Circle for Term 1 CBSE Board 2021

Here we have selected few maths MCQ’s from the class 10 Maths chapter -Area related to circle for your prapartion of the CBSE Board exam Term-1 2021. All these MCQ questions are solved by an expert of maths as per the CBSE norms. Since maximum questions in your question paper of Term 1 will be out of your NCERT text book exercises so the practice of MCQ’s is mandatory for everybody for achieving excellent marks. The practice of NCERT questions is also necessary to clear your concept of the chapters and to gain proper understanding.

## Class 10 Maths MCQ’s with Solutions -Areas Related to Circle for Term 1 CBSE Board 2021

Q1.Perimeter of sector of a circle whose centre of angle is 90° and radius 7 cm is

(a) 35 cm     (b) 25 cm       (c) 77 cm    (d) 7 cm

Ans.(a) 35 cm

The length of the arc(l) corresponding to the sector of the circle with θ as a centre of angle  is given by

l = (θ/360°)2πr

Here r = 7 cm, θ = 90°

l = (90°/360°)2×(22/7)7 = (1/4) ×44 = 11

Perimeter of the sector is = l+ r + r = 11 +2×7 = 11 +24 = 35 cm

Q2. The area of a circle that can be inscribed in a square of side 10 cm is

(a) 40π  cm²    (b)  30π cm²    (c)  100π cm²         (d) 25π cm²

Ans.(d) 25π cm²

If a circle is inscribed in a square, side of the square is equal to the diameter of the circle

Let the diameter of the circle is = 2r

∴ 2r = 10 ⇒ r= 5

Area of the circle is = πr² = π×5² = 25π

Q3.The perimeter of a sector of radius 5.2 cm is 16.4 cm ,the area of the sector is

(a) 31.2 cm²       (b) 15 cm²      (c) 15.6 cm²     (d) 16.6 cm²

Ans.   (b) 15.6 cm²

The perimeter of the sector is = 2r +l

Where l is the length of the arc corresponding to the sector of the circle

2×5.2 +l = 16.4

10.4 + l = 16.4

l = 16.4 -10.4 =6

The length of the arc(l) corresponding to the sector of the circle with θ as a centre of angle  is given by

Area of the sector is = (1/2) lr

Area of the sector =(1/2) ×6×5.2 =15.6 cm²

### Class 10 Maths MCQ’s with Solutions -Areas Related to Circle for Term 1 CBSE Board 2021

Q4.The perimeter of a circular and square fields are equal. If the area of the square field is 484 m² then the diameter of the circular field is

(a)  14 cm    (b) 28 cm   (c) 21 cm       (d)7 cm

Ans.(b) 28 cm

Let the radius of circular field is r and side of square field is x

We are given

x² = 484

x = 22 cm

2πr = 4x

πr = 2x = 2×22 =44

(22/7) r = 44

r = (44 ×7)/22 = 14 cm

2r = 28 cm

Hence diameter of the circular field is 28 m

Q5.The area of the largest square that can be inscribed in a circle of radius 12 cm is

(a) 24 cm²      (b) 249 cm²       (c) 288 cm²     (d) 196√2cm²

Ans.(c) 288 cm²

Let the side of the largest square is x

The diagonal must be the diameter of the circle since the square is inscribed in the circle

Diagonal and both sides will make right triangle

Diagonal = Diameter of the circle =2×12 = 24 cm

x² + x² = 24² = 576

2x² = 576

x² = 288

Area of the square = 288 cm²

### Class 10 Maths MCQ’s with Solutions -Areas Related to Circle for Term 1 CBSE Board 2021

Q6.The area of the largest triangle that can be inscribed in a semicircle  of radius r  is

(a) r²      (b) 2r²       (c) r³    (d) 2r³

Ans.(a) r²

The base of the Lagest triangle inscribed in a semicircle is the diameter of the semicircle =2r

And the altitude of this triangle is = radius of the circle = r

Area of the required triangle = (1/2) Base ×Altitude = (1/2) 2r ×r = r²

Q7.The area (in cm²) of the circle that can be inscribed in a square of side 8

(a) 64π cm²      (b) 16π cm²       (c) 8π cm²     (d) 32πcm²

Ans.(b) 16π cm²

The diameter of the circle inscribed in a square is the side of the square = 8 cm

The radius of the circle is = 8/2 = 4 cm

Area of the circle is πr² = π×4² = 16 π cm²

Class 10 Maths MCQ’s with Solutions -Areas Related to Circle for Term 1 CBSE Board 2021

Q8.A steel wire when bent in the form of a square encloses an area of 121 cm². If the same wire is bent in the form of a circle, then the circumference of the circle is

(a) 18 cm       (b) 44 cm      (c) 22 cm       (d) 11 cm

Ans.(b) 44 cm

A steel wire when bent in the form of a square and then in the form of a circle,in both case its perimeter will be tha same, the area of square given to us is 121 cm²

Let the side of square is = x

x² = 121

x = 11 cm

The circumference of the circle is = Perimeter of the square = 4x

circumference of the circle is = 4×11 = 44 cm

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You can study other MCQs for attempting 1 marks questions in Class 10 CBSE Board Exams

Class 10 Maths Sample Paper (Basic) with Solutions for Term 1 CBSE Board Exam 2021-22

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## NCERT Solutions of  Science and Maths for Class 9,10,11 and 12

### NCERT Solutions of class 9 maths

 Chapter 1- Number System Chapter 9-Areas of parallelogram and triangles Chapter 2-Polynomial Chapter 10-Circles Chapter 3- Coordinate Geometry Chapter 11-Construction Chapter 4- Linear equations in two variables Chapter 12-Heron’s Formula Chapter 5- Introduction to Euclid’s Geometry Chapter 13-Surface Areas and Volumes Chapter 6-Lines and Angles Chapter 14-Statistics Chapter 7-Triangles Chapter 15-Probability Chapter 8- Quadrilateral

### NCERT Solutions of class 9 science

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CBSE Class 9-Unsolved question paper of science 2019

### NCERT Solutions of class 10 maths

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CBSE Class 10-Question paper of maths 2019 with solutions

### Solutions of class 10 last years Science question papers

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### NCERT solutions of class 11 maths

 Chapter 1-Sets Chapter 9-Sequences and Series Chapter 2- Relations and functions Chapter 10- Straight Lines Chapter 3- Trigonometry Chapter 11-Conic Sections Chapter 4-Principle of mathematical induction Chapter 12-Introduction to three Dimensional Geometry Chapter 5-Complex numbers Chapter 13- Limits and Derivatives Chapter 6- Linear Inequalities Chapter 14-Mathematical Reasoning Chapter 7- Permutations and Combinations Chapter 15- Statistics Chapter 8- Binomial Theorem Chapter 16- Probability

CBSE Class 11-Question paper of maths 2015

CBSE Class 11 – Second unit test of maths 2021 with solutions

### NCERT solutions of class 12 maths

 Chapter 1-Relations and Functions Chapter 9-Differential Equations Chapter 2-Inverse Trigonometric Functions Chapter 10-Vector Algebra Chapter 3-Matrices Chapter 11 – Three Dimensional Geometry Chapter 4-Determinants Chapter 12-Linear Programming Chapter 5- Continuity and Differentiability Chapter 13-Probability Chapter 6- Application of Derivation CBSE Class 12- Question paper of maths 2021 with solutions Chapter 7- Integrals Chapter 8-Application of Integrals

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