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RD Sharma Solutions Class 8 Mathematics Solutions for Volume Surface Area Cuboid Cube Exercise 21.3 in Chapter 21 - Volume Surface Area Cuboid Cube
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A cuboid has total surface area of 50 m2 and lateral surface area is 30 m2. Find the area of its base.
Answer:
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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