The perimeter of one face of a cube is 20cm. its total surface area is:
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Answered by
207
One side of a cube is in form of a square.
Let length of side of the square be a
Perimeter of square = 4a
=>4a= 20
=> a= 5 cm
now side of the cube is 5cm
Total surface area = 6a^2
= 6 * 5^2
= 6 * 25
= 150 cm^2
Let length of side of the square be a
Perimeter of square = 4a
=>4a= 20
=> a= 5 cm
now side of the cube is 5cm
Total surface area = 6a^2
= 6 * 5^2
= 6 * 25
= 150 cm^2
Answered by
44
hi 150 cm is the answer.
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