Answer:
The answer is 840
Step-bystep explanation:
you first have to muliply 10 and 10.5 them multiply the number you got by 8
420
Step-by-step explanation:
find the area of the triangle at the top first
b*h/2
10.5*10/2 = 52.5
then times the area by the depth
52.5*8= 420mm
exact form - b = -11/5
decimal form - b = -2.2
Mixed number form - b = -2 1/5
C.
15 is the answer
d. 5,400 mm
