Question

if in a circle of radius 1cm, iys diameter is increased by 100% then the area is increased by(in%)?​

Answer 1

Answer:

4 times

Step-by-step explanation:

if diameter is increased by 100%

it means radius doubled

in area there are 2 radius that is r*r

so it is 2*2

equal to 4

Answer 2

Answer:

Let diameter be x so r=1 therefore the original diamter is 2cm no 100%of 2 is 2 so increase I'n diameter is 2 so now d=4 original area =22/7*1=44/7 now the increase in area is 44/7+22/7*4=44/7+88/7=132/7 so 132/7*100 is the increase in percent