Question

A cylindrical tank has diameter 3.2 m and length

12.7 m.
What is the surface area of the tank, to 1 decimal
place?

Answer 1

Answer: 174.3

Step-by-step explanation: diameter of cylindrical tank = 3.2m

so radius is half of 3.2m

length= 12.7m

T.S.A of tank = 2pie r ( r+h)

2 x 3.14 x 3.2/2 ( 3.2/2 + 12.7 )

= 174.29

rounding it off to one decimal the answer would be 174.3

Answer 2

143.8m^2

Explanation:

surface area of a cylinder has the formular

2πr(r+h)

from the question,

radius= diameter/2 = 3.2/2 = 1.6m

height (h) = 12.7m

Area= 2× 3.142×1.6(1.6+12.7)

Area= 10.0544(14.3)

Area= 143.77

Area= 143.8m^2 to 1 decimal places