Each edge in a cube is $5 c m$ . What is the surface area in square cm?

25

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30

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100

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125

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150

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Solution

The correct option is E $150$
Surface area of a cube is $6 a^{2}$ where $a$ is an edge of the cube.

The surface area of the cube with edge $5$ cm is given by:

$A = 6 a^{2} = 6 \times (5)^{2} = 6 \times 25 = 150 c m^{2}$

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Q. If each edge of a cube is increased by 50%, the percentage increase in the surface area is
(a) 50%
(b) 75%
(c) 100%
(d) 125%

If each edge of a cube is increased by $50 %$ then percentage increase in its surface area is

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Q. If each edge of a cube is increased by

25 %

, what is the percentage increase in its surface area?

A cube of edge 5 cm is divided into cubes each of edge 1 cm. The ratio of the total surface area of one of the small cubes to that of the large cube is equal to:

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Each edge in a cube is 5 cm. What is the surface area in square cm?

The correct option is E 150Surface area of a cube is 6a2 where a is an edge of the cube.The surface area of the cube with edge 5cm is given by:A=6a2=6×(5)2=6×25=150cm2

Each edge in a cube is $5 c m$ . What is the surface area in square cm?

The correct option is E $150$
Surface area of a cube is $6 a^{2}$ where $a$ is an edge of the cube.

The surface area of the cube with edge $5$ cm is given by:

$A = 6 a^{2} = 6 \times (5)^{2} = 6 \times 25 = 150 c m^{2}$