Question

1. Find the volume, the total surface area and the lateral surface area of the cuboid having :

length = 10 m, breadth = 35 cm and height = 1.2 m ​

Answer 1

Answer:

volume - l*b*h

10*0.35*1.2

4.2 cubic metre

total surface area - 2(lb+bh+lh)

2(10*0.35+0.35*1.2+10*1.2)

2(15.92)

31.84 square metre

curved surface area - 2(l+b) h

2(10+0.35) 1.2

2*10.35*1.2

24.84 square metre

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Answer 2

dimensions of the cuboid

l = 10m , b = 35cm = 0.35m , h = 1.2m

i) volume of a cuboid = lbh

= 10m × 0.35m × 1.2m

= 4.2m³

ii) total surface area = 2(lb+bh+hl)

= 2(10×0.35 + 0.35×1.2 + 1.2×10)

= 2(3.5+0.42+12)

= 2(15.92)

= 31.84m²

iii) lateral surface area = 2(l+b)h

= 2(10+0.35)1.2

= 2(10.35)1.2

= 2.4(10.35)

= 24.84m²

I hope this answer helps you.