The cost of construction the box is Rs.7795200.
Explanation:
Given : A cuboid of length 400 cm, Breadth 220 cm and Height 120 cm is to be made with wood costing Rs.24 per.sq.m.
To find : The cost of construction the box ?
Solution :
A cuboid of length 400 cm, Breadth 220 cm and Height 120 cm.
The total surface area of the cuboid is
TSA=2 (lb+bh+hl)TSA=2(lb+bh+hl)
Substitute the values,
TSA=2 (400\times 220+220\times 120+120\times 400)TSA=2(400×220+220×120+120×400)
TSA=2 (88000+26400+48000)TSA=2(88000+26400+48000)
TSA=2 (162400)TSA=2(162400)
TSA=324800\ cm^2TSA=324800 cm
2
Wood costing Rs.24 per.sq.m.
The cost of box constructed is
C=324800\times 24C=324800×24
C=Rs.7795200C=Rs.7795200
Therefore, the cost of construction the box is Rs.7795200.