Areas Related to Circles · Class 10 · CBSE Mathematics
If the perimeter of a semi-circular protractor is 36 cm, find its diameter. (Use pi = frac{22}{7})
Practice question from Areas Related to Circles (Class 10 · CBSE Mathematics), with the correct answer and a step-by-step solution.
medium · MCQ · Q-1C9C6C
If the perimeter of a semi-circular protractor is 36 cm, find its diameter. (Use )
- A.7 cm
- B.14 cmCorrect answer
- C.21 cm
- D.28 cm
Solution
The perimeter of a semi-circle is given by . Given perimeter is 36 cm. So, cm. The diameter is cm.
More from Areas Related to Circles
- If the circumference and the area of a circle are numerically equal, then the radius of the circle is:
- Find the area of a sector of a circle with radius 6 cm if angle of the sector is 60^circ. Use pi = frac{22}{7}.
- The area of the largest triangle that can be inscribed in a semi-circle of radius r is:
- A chord of a circle of radius 10 cm subtends a right angle at the centre. Find the area of the corresponding minor segment. (Use pi = 3.14)
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