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प्रश्न
The volume of a cube is 2744 cm2. Its surface area is
विकल्प
196 cm2
1176 cm2
784 cm2
588 cm2
उत्तर
1176 cm2
Let the edge of the cube be a cm.
Then, volume of the cube = a3
Or,
a3 = (23 × 73)
a = 2 × 7
a = 14 cm
Therefore, surface area of the cube `= 6"a"^2`
= (6 × 14 × 14) cm2
= 1176 cm2
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