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in Surface Areas And Volumes by (29.9k points)
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Fill in the blanks: 

(i) If l, b, h be the length, breadth and height of a cuboid, then its whole surface area = (………… ) sq units. 

(ii) If l, b, h be the length, breadth and height of a cuboid, then its lateral surface area = (…………… ) sq units. 

(iii) If each side of a cube is a, then its lateral surface area is………..sq units. 

(iv) If r is the radius of the base and h be the height of a cylinder, then its volume is (………….. ) cubic units. 

(v) If r is the radius of the base and h be the height of a cylinder, then its lateral surface area is (…………. ) sq units.

1 Answer

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by (30.3k points)
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Best answer

(i) We know that, 

Total surface area of the cuboid = 2 (lb + bh + hl]

(ii) We know that, 

Lateral surface area of cuboid = 2 [(l + b) × h] 

(iii) We know that, 

Lateral surface area of cube = 4a2 

(iv) We know that, Volume of cylinder = \(\pi r^2h\)

(v) We know that, 

Lateral surface area of cylinder = \(2\pi r^2h\)

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