The area of a rectangle whose length is twice its breadth is increasing at the rate of 8 cm-/sec. Find the rate at which length is increasing when the breadth is 5 cm.
Answers
Answered by
1
Answer:
Let length =x
breadth =y
Area of rectangle =xy
A=x
x
=x
3
/2
dt
dA
=48cm
2
/sec
dt
dA
=
2
3
x
dt
dx
x=4.5cm
48=
2
3
×
4.5
×
dt
dx
4.5
32
=
dt
dx
⇒15.08
Similar questions