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Daniel is painting the walls and ceiling...

Daniel is painting the walls and ceiling of a cuboidal hall with length, breadth and height of `15` `m`, `10` `m` and `7` `m` respectively. From each can of paint `100` `m^2` of area is painted. How many cans of paint will she need to paint the room?

A

`5`

B

`6`

C

`7`

D

`8`

Text Solution

Verified by Experts

The correct Answer is:
A
The surface area of the cuboidal hall needs to be painted `A = 2(lh+bh)+lb`
`A =2(10**7+7**15)+(15**10)`
`A = 2**175+150 = 500m^2`
Area painted by one can of paint `= 100m^2`
So, to paint complete room number of can of paint required `= 500/100 = 5`
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