send the extra mcq question of chapter 12 class 10 .
please send it urgent
near about 20 to 40
math subject.
Answers
Answer:
what is the chapter name
??????????????????????????
Answer:
Step-by-step explanation:
Class 10 Maths MCQs Chapter 12 Areas Related to Circles
Circle Multiple Choice Question 1. The area of the circle is 154 cm2. The radius of the circle is
(a) 7 cm
(b) 14 cm
(c) 3.5 cm
d) 17.5 cm
Answer/ Explanation
Areas Related To Circles Class 10 MCQ With Answer: dExplaination: Reason: Area of circle = 154 cm²
⇒ nr² = 154 cm2
⇒ 227 × r² = 154
⇒ r² = 154 × 227
⇒ r² = 7 × 7 = 49
∴ r = √49 = 7
2. If angle of sector is 60°, radius is 3.5 cm then length of the arc is
(a) 3 cm
(b) 3.5 cm
(c) 3.66 cm
(d) 3.8 cm
Answer/ Explanation
Answer: c
Explaination: Reason: Here r = 3.5 cm = 3510 = 72 cm θ = 60°
Length of arc = θ360 × 2πr = 60360 × 2 × 227 = × 72 × 16 × 22 = Undefined control sequence \3 = 3.66 cm
Areas Related To Circles MCQs Question 3. The area of a quadrant of a circle whose circumference is 22 cm, is
MCQ Questions for Class 10 Maths Areas Related to Circles with Answers 4
Answer/ Explanation
Answer: d
Explaination: Reason: Here 2πr = 22 cm
2 × 227 × r = 22
⇒ r = 22 × 722 × 12 = 72 cm
∴ Area of quadrant of circle = 14πr² = 14 × 227 × 72 × 72 = 778 cm²
4. If 0 is the angle in degrees of a sector of a circle of radius V, then area of the sector is
MCQ Questions for Class 10 Maths Areas Related to Circles with Answers 5
Answer
Answer: b
5. A horse is tied to a peg at one corner of a square shaped grass field of side 15 m by means of a 7 m long rope. The area of that part of the field in which the horse can graze, is
(a) 77 cm²
(b) 772 cm²
(c) 154 cm²
(d) 774 cm²
Answer/ Explanation
MCQ on Areas Related To Circles With Answer: b
Explaination:
MCQ Questions for Class 10 Maths Areas Related to Circles with Answers 2
MCQ Questions for Class 10 Maths Areas Related to Circles with Answers 1
6. The area of the circle whose diameter is 21 cm is
(a) 346.5 cm²
(b) 37.68 cm²
(c) 18.84 cm²
(d) 19.84 cm²
Answer/ Explanation
Answer: a
Explaination: Reason: Here diameter = 21 cm
∴ Radius r = 212 cm
Area of the circle, A = πr²
∴ A=227×212×212=11×3×212=6932=346.5cm2
7. The area of the sector of a circle with radius 6 cm and of angle 60° is
(a) 9.42 cm²
(b) 37.68 cm²
(c) 18.84 cm²
(d) 19.84 cm²
Answer/ Explanation
Answer: c
Explaination: Reason: Here r = 6 cm, θ = 60°
Area of the sector = θ360
∴ Area = 60360 × 3.14 × 6 × 6 = 16 × 3.14 × 6 × 6 = 3.14 × 6 = 18.84 cm²
8. The area of a circle whose circumference is 22 cm, is
(a) 11 cm²
(b) 38.5 cm²
(c) 22 cm²
(d) 77 cm²
Answer/ Explanation
Answer: b
Explaination:
MCQ Questions for Class 10 Maths Areas Related to Circles with Answers 3
9. The area of a circle is 154 cm2. Its diameter is
(a) 7 cm
(b) 14 cm
(c) 21 cm
(d) 28 cm
Answer/ Explanation
Answer: b
Explaination: Reason: Here area of the circle, A = 154 cm², Radius, r = ?
Area of the circle = 154 cm² …(Given)
∴ πr² = 154
⇒ 227 × r² = 154
⇒ r² = 154 × latex]\frac{7}{22}[/latex] = 7 × 7
⇒ r = 7 cm
∴ Diameter of the circle = 2 × r = 2 × 7 = 14 cm
10. The length of the minute hand of a clock is 14 cm. The area swept by the minute hand in 5 minutes is
(a) 153.9 cm²
(b) 102.6 cm²
(c) 51.3 cm²
(d) 205.2 cm²
Answer/ Explanation
Answer: c
Explaination: Reason: Angle swept by the minute hand in 1 minute = (360° ÷ 60) = 6°
∴ θ = 30°
∴ Angle swept by the minute hand in 5 minutes = 6° × 5 = 30°
Length of minute hand (r) = 14 cm
∴ Area swept = θ360πr² = 30360 × 227 × 14 × 14 = 1543 = 51.3 cm²