374,942 views
37 votes
37 votes
Can you help me find the area of that paper that remains?

Can you help me find the area of that paper that remains?-example-1
User Jeff Werner
by
2.6k points

1 Answer

23 votes
23 votes

The diagram is given.

To determine the area of the paper that remains.

First calculate the area of rectangle , using the formula.


A=l* w
A=27*12=324sq.\operatorname{cm}

The diameter of semicircle is given 12 cm.

To calculate the area of semicircle , use the formula.


A=(\pi)/(2)(r^2)
A=(3.14)/(2)*((12)/(2))^2=56.52sq.cm

Then the area of paper that remains will be the area of rectangle subtracted from area of two semicircle .


A=324-(2*56.52)=324-113.04=210.96sq.cm

Hence the area of paper that remains is 210.96 sq.cm.

User Iamhuynq
by
2.9k points