Math, asked by preet2002, 1 year ago

a swimming pool is 20 m in length, 15 m in breadth, and 4 m in depth. find the cost of cementing its floor and walls at the taye of rs 12 per square metre.

Answers

Answered by shubbs

308

first find the lsa + lb ....
.lsa 2h<l+b>
2*4<20+15>
8*35
280
now lb....
20*15
300
add them
280+300
580
now cost is 12 per m sq so
....580*12
6960 rupee

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Answered by MASelvam

673

l= 20 m
b= 15 m
h= 4 m

First we find the area of floor
=>20x15
=>300 m²
Then, we find area of walls
=>2(20x4) + 2(15x4)
=>2(80 + 60)
=>280 m²

Add both to get total area
=>300+280 = 580 m²

Multiply total area and cost per m²
=>580 x 12
=>Rs. 6960

Hope it'd be useful.Please choose it the brainliest answer.
CHEERS!
MASelvam IITian

preet2002: good answer

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