Question

the ratio of length and height of a hall is 5:2 . find the height if the length is 10m​

Answer 1

Answer:

answer is 21 ....

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

The rectangular solid is a cuboid.

Let the length of the cuboid =5a, breadth =4a, and height =2a

Total surface area of a cuboid of length l, breadth b and height h =2(l×b+b×h+l×h)

Given, total surface area of the cuboid =1216cm

2

2(5a×4a+4a×2a+2a×5a)=1216cm^2

76a^2=1216

a=4

Hence, the length of the cuboid =5a=20

20 cm, breadth =4a=16 cm, height =2a=8 cm

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