Why can the calculations in red be thought of as
simpler problems?
4 X 4
34
x 24
16
120
80
+ 600
816
4 X 30
20 X 4
20 X 30

a .4y4

hope this !

answer:

125 yards

explanation:

75+50=125. that is my answer

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.