L=12m,B=8m it contant 480 cu.meter. find cost of colouring its wall at Rs 15 per sq meter
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Answer:
₹3480
Step-by-step explanation:
l=12, b=8, h=?
wkt, volume of cuboid=lxbxh
480=12x8xh
h=480/90=5
TSA of cuboid=2(lb+BH+HL)
=196x2=392msq_1
LSA of cuboid=2(l+b)xh
=96msq_2
area of base=lxb
=64msq_3
adding eqn. 3 & 2
=160msq_4
substract eqn. 4 in 1
=252
now, cost of Coloring it's wall=
252x15=₹3480
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