Question

1 वर्ग की भुजा 2.8 सेंटीमीटर तो वृत्त के क्षेत्रफल ज्ञात करें​

Answer 1

Step-by-step explanation:

Given,

• side of square = 2.8 cm
• To find area of circle ?

So, we have first to find the diagonal of square

• In square side can be considered as base and perpendicular

so,

( Hypotenuse )^2 = ( Perpendicular )^2 + ( Base )^2

( H )^2 = ( 2.8 )^2 + ( 2.8 )^2

( H )^2 = 7.84+7.84

H = √15.68

H = 4 cm ( round figure )

now

Hypotenuse is considered as the diametre of Circle

Diameter = 4 cm

radius = 4/2

= 2 cm

area of circle = πr^2

= 22/7×4

= 88/7

= 12.60 cm^2

hence the area of circle = 12.60 cm^2

hope this will help you