The length x of rectangle is decreasing at a rate of 3 `cm//min` and width y is increasing at a
Channel: Doubtnut
Date: 2020-01-26

The length x of rectangle is decreasing at a rate of 3 `cm//min` and width y is increasing at a rate of 2 `cm//min` When x =10 cm and y=6 cm. Find the rate of change of(i) the perimeter (ii) the area of rectangle.