Question

1st question ka answer plzz​

Answer 1

Answer:

Circumference is = 39.6 cm

We know circumference = 2 × pi × r

A.T.P

2×22/7 × r = 396/10

r = (396×7)/(10×22×2)

r = 6.3 cm

Therefore ,

Area = pi × r^2

= 22/7×(6.3)^2

=127.74 sq.cm Ans

Answer 2

Answer:

124.74 cm is the answer.

Step-by-step explanation:

First of all,

Circumference of circle=2πr.

The circumference of circle is 39.6cm.

39.6cm=2×22/7×r.

39.6=44/7×r.

r=39.6×7/44.

r=277.2/44.

radius=6.3cm.

Now, we have to find the area of circle.

Area of circle=πr^2.

Area of circle=22/7×(6.3)^2.

Area of circle=22/7×39•69.

Area of circle=873.18/7 cm.

Area of circle=124.74cm.

Hence, the Area of circle=124.74cm.