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Someone help me ASAP!!

Someone help me ASAP!!-example-1
User Cocreature
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1 Answer

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Answer:

Total surface area for 3 cylinder tank = 11.4296 × 3 = 34.2888 m²

Tin of paints to buy ≈ 7

Explanation:

Tim wants to cover 3 tanks completely with paints. A tin of paints covers 5 m².

Surface area of a cylinder = 2πr(r + h)

where

r = radius

h = height

Surface area of a cylinder = 2πr(r + h)

r = 1.4/2 = 0.7 m

h = 1.9 m

Surface area of a cylinder = 2 × π × 0.7( 0.7 + 1.9)

Surface area of a cylinder = π × 1.4 × (2.6)

Surface area of a cylinder = 3.64π

Surface area of a cylinder = 3.64 × 3.14

Surface area of a cylinder = 11.4296 m²

The surface area for 1 cylinder tank = 11.4296 m²

Total surface area for 3 cylinder tank = 11.4296 × 3 = 34.2888 m²

Since 1 tin of paints cover 5 m²

? number of tin of paints will cover 34. 2888 m²

tin of paints = 34.2888/5 = 6.85776

tin of paints = 6.85776

tin of paints to buy ≈ 7

User Jimmy Johnson
by
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