Question

If diameter of circle is increase by 40% find how much percentage its area increase???

Answer 1

Answer:

Step-by-step explanation:

-A2A-

We know that the area of a circle is given by A =πr2 =πd24 where r is the radius and d is the diameter.

When the diameter increases by 40%, new diameter d ' = d + 40% of d = d+40100d =7d5

You can find the new area A' = π(d′)24

Percent change in area = New area − Old areaOld area×100

You must work it out and get 96%

I hope it helps!

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Answer 2

Answer:96%

Step-by-step explanation:

percentage increase in area

=(40+40+40×40/100)%

=80+1600/100

=80+16

=96%