Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The sides of an equilateral triangle are increasing at the rate of 2 cm/sec . The rate at which the area increases, when the side is 10 cm is
A
sq. unit/sec
B
10 sq. unit/sec
C
sq. unit/sec
D
sq. unit/sec
Text Solution
Verified by ExpertsThe correct answer is:
C
If x is the length of each side of an equilateral triangle and A is its area, then 
Here, 
and 
⇒ ⇒ 
Sq. unit per sec.
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