Question

find the area of circle given its diameter 70 cm​

Answer 1

A≈3848.45

d Diameter

70

Unit Conversion:

Using the formulas

A=πr2

d=2r

Solving forA

A=1

4πd2=1

4·π·702≈3848.451

Answer 2

area of circle = pi r square

diametr = 2× radius

radius = 35

22/7 ×35×35

22×5×35 =110× 35 =3850 cm square.

thnku ...