1 foot on the north and south sides and 22,499 feet on the other two sides<span />
The formula is 4/3πr^3
4/3 (3.14)(3)^3
answer: 113.09
Answer: y = 3 or y=7
Step-by-step explanation:

what 2 factors of 21 can equal 10 when added together (1*21- no 3*7- yes)
Factor

y-3=0
y=3
or y-7=0
y=7
Answer:
x=-8
Step-by-step explanation:
First you should add 5x+67 and 5x+61 together which is 10x+128
Then you set that equal to 3x+72 which would be: 10x+128=3x+72
After that subtract 3x from both sides which leaves you with: 7x+128=72
Then subtract 128 from 72 which gives you: 7x=-56
Then divide by 7 which gives you x equals negative eight