Question

Diameter = 15cm. find area
​

Answer 1

Step-by-step explanation:

Area of a circle in terms of radius:

Area = π·r2 = 3.14·7.52 = 176.7 square cm(*)

Area of a circle in terms of diameter:

Area = π·(d

2

)2 = 3.14·(15

2

)2 = 3.14·(7.5)2 = 176.7 square cm(*)

Area of a circle in terms of circumference:

Area = C2

4π

= 47.122

4π

= 2220.29

(4·3.14)

= 2220.29

12.56

= 176.7 square cm(*)