600.2 million will be the answer
The perimeter is 20 feet, half the perimeter Would be 10 feet.
Need 2 numbers when added together equal 10 and when multiplied together equal the area of 21.
3 and 7 The pond is 3 feet by 7 feet.
S=vt
s=8 t=32
8=32v
v=0.25
the answer is
s=0.25t
(the unit of s is mile, the unit of t is min)