Question

Circumference=132 cm
Diameter=Find
Radius=Find
Area=Find

Circumference=78.5 cm
Diameter=Find
Radius=Find
Area=find

Diameter=56 cm
Radius=Find
Circumference=Find
Area=Find

Answer 1

Answer:

2πr=78.5

r=78.5/2π

r=78.5/2×3.14=123.2

d=2r

d=2×123.2=246.4

area=πrsquare

area=3.14×123.2×123.2=47659.6

d=56cm

r=d/2

r=56/2=28cm

circumference=2πr=2×3.14×28=175.84

area=πrsquare=3.14×28×28=2461.76

Answer 2

Answer:

pi=c/d(circumstances of a circle)

so,3.14=132/d

so,d=132/3.14

so,d=42.03 cm and

d=2r

so,r(radius)=d/2

so, r =42.03/2

so, r=21.01 cm

so, a(area of a circle)=pi*r*r

so,a=3.14*21.01*21.01

so,a=1386.0591cm2

[convert cm in meter] area=13.86 m2