Question

Ques...The area of a circle is 1386sq. cm Find its diameter and circumference.
Plzz tell the answer with full explanation... Plzzz mates...​

Answer 1

πr^2=1386

22/7×r^2=1386

22×r^2=1386×7

22 × r^2 = 9702

r^2=441

r=√441

r=21cm

Diameter = 2×radius

Diameter= 2×21

Diameter= 42cm

Circumference=2πr

2×22/7×21

132 cm

Hence Circumference = 132 cm

Diameter= 42 cm