Answer:
65.94 ft.
Step-by-step explanation:
pi*d=C
pi*21=65.94
The dimensions can vary. Here is a picture of a triangular prism with a right-triangle base.
X = <span>width
2x-3 = </span><span>length
</span>

width = 6.5 m
length = 2x-3 = 2*6.5 - 3 = 10 m
Answer: 640
Step-by-step explanation:
The scale factor is 20/5=4, so the ratio of the areas is the square of this, or 16.
Thus, the area of ABCD is 40(16)=640.
Answer:
y^2+y-12
Step-by-step explanation:
Once again, FOIL is the way to go!
First, Outside, Inside, Last
y^2+y-12