Question
Find the area of a circle of radius 7
cm. (Take π = 22/7)
Solution
Area = πr² = (22/7) × 7 × 7 = (22/7) × 49 = 22 × 7 = 154 cm²
More Circle Questions
- Find the angle subtended at the center by an arc of a sector whose area is 462 cm² and radius is 21 cm. (Use π = 22/7)
- The minute hand of a clock is 28cm long. Find the area on the face of the clock swept by the minute hand between 8 a.m. and 8: 45a.m
- A metal wire when bent in the form of a square encloses an area 1089 cm 2 , if the same wire is bent in the form of a circle, then its area is?
- In a circle of radius 17 cm, a chord is at a distance 8 cm from the centre. The length of the chord is:
- If the numerical value of the area of a circle is seven times that of its circumference, determine the diameter.
- A chord of a circle is 16 cm long and its distance from the centre is 6 cm. The radius of the circle is:
- In a circle of radius 13 cm, a chord is at a distance 5 cm from the centre. Find the length of the chord.
- The area of a circle is nine times its circumference (numerically). What is the diameter of the circle?
- In a circle of radius 7 cm, the area of a sector is 77 cm². Find the angle of the sector and the length of its arc. (Take π = 22/7)
- Calculate the area of a sector of a circle having a radius of 21 cm, if the angle at the center made by the sector is 60°.
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