RD Sharma - Mathematics

Book: RD Sharma - Mathematics

Chapter: 21. Mensuration-II (Volumes and Surface Areas of a Cuboid and a Cube)

Subject: Maths - Class 8th

Q. No. 15 of Exercise 21.3

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15

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

Given,


Total surface area of cuboid = 50 m2


Lateral surface area of cuboid = 30 m2


So,


=


And,


=


=


=


=


So,


Area of base =


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