## A cuboid of length 40cm, breadth 20cm and height 60cm is to be made. Find the cost of polishing the box if the rate of polishing is AED 24/s

Question

A cuboid of length 40cm, breadth 20cm and height 60cm is to be made. Find the cost of polishing the box if the rate of polishing is AED 24/sq. cm (Please)

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1 month 2021-08-14T06:14:08+00:00 1 Answers 0 views 0

1. The cost of construction the box is Rs.7795200.

Step-by-step 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.