If we increase diameter of circle by 20% then how much area of circle

1.	If we increase diameter of circle by 20% then how much area of circle increased who will first do it will give it be brainliest answer
Answer» Answer: let, DIAMETER=d AREA of circle=πd²/4 NEW D= (20%d)+d = d/5+d=(6d/5) New area= πD²/4= 36d²π/100 Increase in Area=(New area/Old area)×100 =(36πd²/100)÷(πd²/4) ×100 =36×4 =144% THUS, the area of circle increases by 144% if the diameter is increased by 20%

If we increase diameter of circle by 20% then how much area of circle increased who will first do it will give it be brainliest answer

Answer»

Answer:

let, DIAMETER=d

AREA of circle=πd²/4

NEW D= (20%d)+d = d/5+d=(6d/5)

New area= πD²/4= 36d²π/100

Increase in Area=(New area/Old area)×100

=(36πd²/100)÷(πd²/4) ×100

=36×4

=144%

THUS, the area of circle increases by 144% if the diameter is increased by 20%

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If we increase diameter of circle by 20% then how much area of circle increased who will first do it will give it be brainliest answer

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