please answer the 11th,12th,13th and 14th question.
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14. let height of wall be x
so its breadth will be 2x
area of four wall =2(h*l+b*h)
144=2(x*10+2x*x)
(x-9)(x+4)=0
x=9(x=-4 rejected bcoz length cannot be negative)
vol of hall=l*b*h
=10*9*18
=1620m^3
so its breadth will be 2x
area of four wall =2(h*l+b*h)
144=2(x*10+2x*x)
(x-9)(x+4)=0
x=9(x=-4 rejected bcoz length cannot be negative)
vol of hall=l*b*h
=10*9*18
=1620m^3
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