Question

find the area of circle whose raduius is 28 cm​

Answer 1

Answer:

area =

$\pi \: r {}^{2}$

$\pi = 22 \div 7$

r=28

28²=784

inserting value

22÷7×784=area

22×112

2464cm²=area

Answer 2

Given,

Radius=28cm

we know that, circumference of the circle

I.e, c=2pie r

= 2×22/7×28

= 56×22/7

= 176cm.

Thus, the circumference of the circle is 176cm.