Answer:
20. 300π m³
21. 457 1/3 π cm³
Step-by-step explanation:
20. r = 10 ÷ 2 = 5
V = 5² × 12 × π = 25 × 12π=300π m³
21. r = 14 ÷ 2 = 7

V = 457 1/3 π cm³
Answer:

Step-by-step explanation:
Given
← factor numerator and denominator
=
← cancel common factor (x + 1) on numerator/ denominator
= 
The answers of the product is 1.8 * 0.63 = 1.134
Answer:
3384
Step-by-step explanation:
Answer:
I got -0.09...
although I could be wrong, don't take my word for it, it's been a while lol