– Jack can paint a room in 9 hours alone. If Sara helps, they can do the job in 5 hours. How long
1 answer:
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Step-by-step explanation:
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- Length ( l ) = 4 cm
- Width ( w ) = 2 cm
- Height ( h ) = 5 cm
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- Total surface area of a cuboid
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Plug the known values :
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<u>The surface area of the region he will paint is 900 sq.ft.</u>
<u>Step-by-step explanation:</u>
Cubical room measures - 15 ft
Chaz want to paint only the walls of room
Surface of painting region means Lateral surface area (excluding top and bottom)
Lateral surface area of cube =
⇒ 4 * 15 *15
⇒ 900 sq.ft
<u> The surface area of the region he will paint is 900 sq.ft.</u>