Question

Find the total surface area of a Cube whose side is 20 cm.​

Answer 1

Answer:

TSA = 6L² = 6 × 400 = 2400

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Answer 2

Given : a Cube whose side is 20 cm.​

To Find :  total surface area of a Cube

Solution:

total surface area of a Cube = Sum of Surface area of each Face

A cube has all sides equal

Hence Surface area of one face = Side²

=> Surface area of one face = 20²

=>  Surface area of one face = 400 cm²

A cube has 6 faces

Hence Total Surface Area = 6 x Surface area of one face

=> Total Surface Area =  6 x 400

=> Total Surface Area =  2400  cm²

total surface area of a Cube whose side is 20 cm.​ is  2400  cm²

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