GRE Exam Numerical Ability Area and Volume

a steel wire bent in the form of a square of area 121 cm square. if the same wire is bent in the form of a circle, what is the area of the circle?

Read Solution (Total 2)

area of sq 121 so length 11
so perimeter will b 44
hence circumference ogf the circle=44
2*22/7*r=44
so r=7
area of circle will be 154 cm sq
10 years agoHelpfull: Yes(5) No(0)

area of square,a^2=121
so a=11 cm
length of wire=perimeter of circle=44 cm
Hence, 2*3.14*r=44
So radius,r=7
Area of circle=3.14*7*7=154.06 cm square.
10 years agoHelpfull: Yes(1) No(0)

GRE Other Question

If p pencils cost c cents at the same rate,how many pencils can be bought for d dollars? 4 horses are tied on the 4 corners of a square field of 14m length so that each horse can just touch the other two horses.they were able to graze in the area accessible to them for 11 days. What is the number of days that the ungrazed are sufficient for the horses?