9. Find the surface area of the cylinder. S.A. = 2πrh+2πr^2 Round to the nearest tenth.
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r = 4 m h = 6 m
80 m^2
251.3 m^2
301.4 m^2
401.9 m^2
To find the surface area of the cylinder, you can use the formula S.A. = 2πrh + 2πr^2, where r is the radius of the base and h is the height of the cylinder.
Using the given values:
r = 4 m
h = 6 m
Plugging these values into the formula:
S.A. = 2π(4)(6) + 2π(4^2)
S.A. = 2π(24) + 2π(16)
S.A. = 48π + 32π
S.A. = 80π
To round to the nearest tenth, we need to calculate the value of π. Using 3.14 as an approximation for π:
S.A. ≈ 80(3.14)
S.A. ≈ 251.2
Rounding to the nearest tenth, the surface area of the cylinder is approximately 251.3 m^2.
Therefore, the correct answer is 251.3 m^2.