Question

find the curved surface area and total surface area of a right circular cylinder with radius 7 cm and height 15 CM ​

Answer 1

Answer:

660cm^2 and 968cm^2

Step-by-step explanation:

circumference = c = 2 pi r = 2 * 22/7 * 7 cm = 44cm

curved surface area  = c* height = 44cm * 15cm = 660cm^2

base area = pi r^2 = 22/7 * 7cm * 7 cm = 154cm^2

total surface area of a right circular cylinder = curved surface area  + (2)(base area ) = 660cm^2 + (2)154cm^2 = (660 + 308)cm^2 =   968cm^2

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Answer 2

Answer:

CSA of cylinder=

$\pi \: r \: l$

22/7*7*15

=22*15

=330cm2

TSA of cylinder=

$2 \: \pi \: r \: {r + h}$

2*22/7*7(7*15)

44*15/7

94.28cm2

Step-by-step explanation:

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