Question

the diameter of the circle is 20 CM taking radius is equal to 3.4 then find its circumference and its area
$\pi = 3.14$

Answer 1

Diameter = 20cm .

Radius = 10 cm.

Circumference = 2πr = 2(3.14)(10) = 6.28 * 10 = 62.8 cm.

Area = πr² = 3.14 ( 10)² = 3.14 * 100 = 314 cm²

Answer 2

Hi!

Diameter= 20cm
Radius= 20/2=10cm

Circumference= 2πr
= 2×3.14×10
=62.8 cm

Area= πr^2
= 3.14×10×10
=314cm^2

Hope it helps...!!!