Answer:
16.25
Step-by-step explanation:
6.5 + 5 = 32.5/2 = 16.25
510
divide into chunks. I divided it like how you would draw the equal sign.
for top chunk, 20*8=160
for 2nd chunk, 8*25=200
for the last chunk, 15*10=150
add up 160, 200, and 150
37.5
Step-by-step explanation:the formula of surface area of a square is 6a²
and a is 2.5 in this case,so 6*2.5*2.5=37.5
points are( 6,2),(7,5) and (3,8)
X,y changes into y,-X
