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Volume Surface Area Cuboid Cube | Volume Surface Area Cuboid Cube Exercise 21.3

Question 15

A cuboid has total surface area of 50 m2 and lateral surface area is 30 m2. Find the area of its base.

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Given details are,

Total surface area of cuboid = 50 m2

Lateral surface area of cuboid = 30 m2

Total Surface area = 2 (surface area of base) + (surface area of 4 walls) 50 = 2 (surface area of base) + (lateral surface area)

50 = 2 (surface area of base) + 30

50 - 30 = 2 (surface area of base) 20 = 2 (surface area of base) Surface area of base = 20/2

= 10 m2

∴ Area of base is 10m2

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subject-cta

Question 15

A cuboid has total surface area of 50 m2 and lateral surface area is 30 m2. Find the area of its base.

Looking to do well in your science exam ? Learn from an expert tutor. Book a free class!

Given details are,

Total surface area of cuboid = 50 m2

Lateral surface area of cuboid = 30 m2

Total Surface area = 2 (surface area of base) + (surface area of 4 walls) 50 = 2 (surface area of base) + (lateral surface area)

50 = 2 (surface area of base) + 30

50 - 30 = 2 (surface area of base) 20 = 2 (surface area of base) Surface area of base = 20/2

= 10 m2

∴ Area of base is 10m2

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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