Question

Find the height of a cuboid if it's length is 15cm, it's breath is 12cm and it's total surface are is 900cm

Answer 1

Answer:
`h=8.33\ cm`

Explanation:

Given

The length of a cuboid is
`l=15\ cm`

breadth is
`b=12\ cm`

Total surface area is
`S.A.=900\ cm^2`

Surface area is given by
`2(lb+hl+bh)`

Insert the values

`\Rightarrow 900=2(15* 12+15h+12h)\\\Rightarrow 450=225+27h\\\Rightarrow 225=27h\\\Rightarrow h=8.33\ cm`