Question

please let me know the answer​

Answer 1

Step-by-step explanation:

h= 15 cm

r= 7 cm

C. S.A = 2πrh= 2× 22/7 × 15× 7= 660 cm^2

T. S.A = 2πr^2 + 660 = 2× 22/7× 7× 7 + 660

= 308 + 660 = 968 cm^2

Answer 2

The curved surface area is "660 cm²" and the total surface area is "968 cm²". Further explanation is given below.

Step-by-step explanation:

Given:

The height, h = 15 cm

The radius, r = 7 cm

As we know,

Curved surface area = 2πrh

On putting the values in the above formula, we get

⇒  CSA = 2×22/7×7×15

⇒          = 2×22×15

⇒          = 660 cm²

and, Total surface area = 2πr(r+h)

On putting the values in the above equation, we get

⇒  TSA = 2×22/7×7(7+15)

⇒          = 2×22(22)

⇒          = 44×22

⇒          = 968 cm²

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