If the total surface area of a cube is 864 square cm, find the volume of the cube ?
A. 1728 cm3
B. 1624 cm3
C. 144 cm3
D. 1684 cm3
Answer: Option A
Solution(By Examveda Team)
Each edges of cube = a cm∴ Total surface area of cube = 6a2
⇒ 6a2 = 864
⇒ a2 = $$\frac{864}{6}$$ = 144
⇒ a = $$\sqrt {144} $$ = 12 cm
∴ Volume of cube :
= a3 cm3
= (12 × 12 × 12) cm3
= 1728 cm3
Related Questions on Area
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C. 30720 m2
D. 307200 m2
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B. 2.02%
C. 4%
D. 4.04%
E. None of these
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B. 18 cm
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D. Data inadequate
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The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:
A. 40%
B. 42%
C. 44%
D. 46%
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