Advertisements
Advertisements
Question
Find the area of the following circles, given that radius = 5 cm.
Advertisements
Solution
r = 5 cm
Area = `pir^2`
= `22/7 xx 5 xx 5`
= `550/7`
= 78.57 cm2
APPEARS IN
RELATED QUESTIONS
In Figure 5, a circle is inscribed in a triangle PQR with PQ = 10 cm, QR = 8 cm and PR =12 cm. Find the lengths of QM, RN and PL ?

In the following figure, the area of the segment PAQ is

In the given figure, a circle is inscribed in an equilateral triangle ABC of side 12 cm. Find the radius of inscribed circle and the area of the shaded region.
[Use `sqrt(3)= 1.73, pi = 3.14]`

The area of a sector of a circle with radius r, making an angle of x° at the centre is
The minute hand of a clock is 12 cm long. Find the area swept by in it 35 minutes.
Two circles touch externally. The sum of their areas is 130π sq. cm and the distance between their centers is 14 cm. Find the radii of the circles.
The following figure shows two circles with the same center. The radius of the larger circle is 10 cm and the radius of the smaller circle is 4 cm.

Find:
(a) the area of the larger circle
(b) the area of the smaller circle
(c) the shaded area between the two circles. (π = 3.14)
The floor of the circular swimming pool whose radius is 7 m has to be cemented at the rate of ₹ 18 per m2. Find the total cost of cementing the floor
Area of a rectangle and the area of a circle are equal. If the dimensions of the rectangle are 14 cm × 11 cm, then radius of the circle is ______.
If radius of a circle is increased to twice its original length, how much will the area of the circle increase?
