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sashaice [31]
3 years ago
10

a cylindrical grain bin has a radius of 9 feet and a height of 30 feet. What is the surface area of the bin? 1,808.63 ft^2 1949.

94 ft^2 1,356.48^2 2,204.28 ft^2
Mathematics
2 answers:
Leokris [45]3 years ago
6 0
Surface area of bin:
A = 2(pi)rh + 2(pi)r^2
Assuming you use 3.14 for pi:

A = 2(3.14)(9)(30) + 2(3.14)(81)
A = 2204.28ft^2
olga55 [171]3 years ago
3 0

Answer:

Surface area of bin is:

2204.28 ft²

Step-by-step explanation:

Surface area of bin=Surface area of cylinder

We know that surface area of cylinder is given by:

A = 2πrh + 2πr²

where r is the radius of the cylinder and h is the height of the cylinder

Here, r=9 ft and h=30 ft

Assuming π=3.14

A = 2×3.14×9×30 + 2×3.14×9×9

A = 2204.28 ft²

Hence, surface area of bin is:

2204.28 ft²

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