the dimension s of cuboid are in the ratio 5:2:1. its volume is 1250 cube meter. what is its total surface area ?
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let l = 5x
b= 2x
h= x
5x*2x*x=1250
10x^3 =1250
x^3=125
x= 5m
substituting the value of x
l= 5*5=25m
b=5*2=10m
h=5m
TSA=2(lb+bh+hl)
= 2(25*10+10*5+25*5)
=2(250+50+125)
= 2(425)
=850m^2
b= 2x
h= x
5x*2x*x=1250
10x^3 =1250
x^3=125
x= 5m
substituting the value of x
l= 5*5=25m
b=5*2=10m
h=5m
TSA=2(lb+bh+hl)
= 2(25*10+10*5+25*5)
=2(250+50+125)
= 2(425)
=850m^2
pravin499226:
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