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A square plate of metal is expanding and each of its side is increasing at the rate of 2 cm per minute. At what rate is the area of the plate increasing when the side is 20 cm long ? ?

A square plate of metal is expanding and each of its side is increasing at the rate of 2 cm per minute. At what rate is the area of the plate increasing when the side is 20 cm long ? ?

Grade:11

1 Answers

SHAIK AASIF AHAMED
askIITians Faculty 74 Points
6 years ago
let s be the side of a square
Area of a square is given by s2.
da/ds=2sds
=2(20)(2)
=80cm2.
Thanks and Regards
Shaik Aasif
askIITians Faculty

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