Multiple Choice Questions (MCQs)
10) The perimeter of one face of a cube is 20 cm.
Its total surface area is :
(a) 2400 cm?
(b) 150 cm?
(c) 120 cm?
(d) 96 cm
Answers
Answered by
9
Answer:
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
Answered by
5
Answer:
D)150
Step-by-step explanation:
4l=20
l=5
area=6l^2
=6×5^2
=6×25
=150cm^2
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