Question
Two swimming pools have the same area,namely 315m squared. One is circular,the other square. WHICH one has the longest perimeter?
Answers
bobpursley
of course, the square.
square: s^2=315, perimeter= 4s=4*sqrt315
circle: PI*r^2, perimeter= PI*2r=PI*2*sqrt315/PI=2*sqrt315
check that.
square: s^2=315, perimeter= 4s=4*sqrt315
circle: PI*r^2, perimeter= PI*2r=PI*2*sqrt315/PI=2*sqrt315
check that.