Q. 25.0( 1 Vote )

B.

C. 10 cm^{2}/sec

D. 5 cm^{2}/sec

Answer :

The area of an equilateral triangle, with side a, is defined as

– (1)

Given that and a=10cm, we have to calculate

Differentiating (1) with respect to t, we get

Substituting the values, we get

=10√3 cm^{2} /sec

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