Finding diagonal sum
#b
Observing the square
Answer:
528 square inches
Step-by-step explanation:
SA = 2(10·16) + 2(10·4) +2(4·16)
= 2(160)+2(40)+2(64)
= 320 + 80 + 128
= 528 square inches
5/7
You find a slope by using the equation y2-y1/x2-x1.
In this case: 15-5/21-7
10/14