Question

If the circumference of a circular sheet is 154 m, find its radius. Also find the area of the sheet.
$take \: \pi \: as \: 22 \div 7$

Answer 1

 If the perimeter of the circle =154cm
Perimeter of circle= 2□r
then , 2 X 22/7 X r=154cm

44/7X r=154cm

R=154 /44/7=154X7/44

R=49/2

Area of the circle =22/7 X 49/2 X 49/2

=3773/2=1886.5 square cm.

HOPE IT HELPS YOU.

Answer 2

Hey!

♣ CIRCLES ♣

Given,
Circumference = 2πr
154  = 2 * 22/7 * r
r = 49/2 or 24.5

Now,  Area = πr²
                   = 22/7 * 24.4 * 24.4
                   = 1871.13 cm²