Hi!
length = l = 2 * width = 2 * w
Area = l * w = l * 2 * l = 2 * l^2
2 * l^2 = 72
l^2 = 72/2 = 36
l = square root of 36
l = 6
l = 2 * w => w = l/2 = 6/2 = 3
Perimeter = 2 * l + 2 * w = 2 * 6 + 2 * 3 = 12 + 6 = 18 feet
Hope this helps!
KC= 31-10= 21
21÷2=10.5
KN= 10.5×4=42
42+1=43
KN=43
D, one number is positive and the other is negative. The only way it could equal 0 is to cross the other out. An example is, -5+5=0
Move the decimal to right 3 times
1/6, 0.16, and 16.7% basically 3/3-1/3= 2/3 which is divided by 1/4 which leaves 1/6 ect
