Answer:
C=40030.17
Step-by-step explanation:
2 x pi x 6371 =40030.17 hope this is what you're looking for :)
Answer: x^2-9x+1
Step-by-step explanation:
x^2-7x-7 d(x-1)
(you would just replace x to (x-1)
(x-1)^2-7(x-1)-7
(solve by square rooting (x-1)(x-1) then foil)
x^2-9x+1
Multiply first, then add. 12 times 7 = 84. Then add 8. 84 + 8 = 92.
43560 sq. ft
Answer till 20 characters