Question

the circumference of a circle exceeds is diameter by 180cm calculate it's the area​

Answer 1

Step-by-step explanation:

Given−

Thecircumferenceofacircleexceedsitsdiameterby180cm.

Tofindout−

Thecircumferenceofthecircle=C=?

Solution−

Letr=radiusofthecircle.

∴Itsdiameter=D=2rand

itscircumference=C=2πr.

Bythegivencondition,

(C−D)cm=180cm

⟹2πr−2r=180

⟹2r(π−1)=180

⟹2r(

7

22

−1)=180

⟹r=

15×2

180×7

cm=42cm.

∴Thecircumference=C=2πr=2×

7

22

×42cm=264cm.