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.
4128 divided by 50. The answer is the number of bags
96 in total since 3 times 12 equals 36. Then you have 4 times 12 which equals 48. Also you have 2 times 6 equals 12. THEN you add it together to get 96.
