Answer:
80
Step-by-step explanation:
89^2-39^2=6400, 6400=80^2
Answer:
I can't really see the whole question, but for a cone the volume formula is πr2h
3
Step-by-step explanation:
First covert them to fractions with the same denominator so you can compare them (9/12 and 4/12), then subtract the numerators, and not the denominators (9/12-4/12), then whatever you get is the answer (5/12). If you can, simplify.
Answer:
B
Step-by-step explanation:
Since the triangle is right use the tangent ratio to find x
tan64° = 
= 
Multiply both sides by 11
x = 11 × tan64° = 22.55 → B
