If the radius of a circle is increased to twice its original length,how much will the area of the circle increase
Answers
Answered by
29
radius =r
doubled radius =2r
area of circle = 22/7 ×r×r
but after double radius
it becomes.
=22/7 ×2r×2r
=88/7 ×r×r
area becomes 4 times greater
hope its helpful
doubled radius =2r
area of circle = 22/7 ×r×r
but after double radius
it becomes.
=22/7 ×2r×2r
=88/7 ×r×r
area becomes 4 times greater
hope its helpful
Answered by
12
Area of circle = pie *R*R
so you can see if New R'=2R then
new Area A'=pie *2R*2R =4Pie *R*R =4A
so increase =A'-A=4A-A=3A
so in %=(3A/A)*100=300
so you can see if New R'=2R then
new Area A'=pie *2R*2R =4Pie *R*R =4A
so increase =A'-A=4A-A=3A
so in %=(3A/A)*100=300
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