We know that V= 4/3 pi r^3
So r^3= 140/ ((4/3) pi)= 33.422538
Hence r= 3.221166
SA = 4 pi r^2
= 4 pi 3.221166^2
= 130.39 cm^2
= 130 cm^2
Answer:
D.
Step-by-step explanation:
The problem is asking to multiply x-5 by x^2, so we can set it up to distribute the x^2 to both values. The final answer would therefore be x^2(x-5), which is D.
3^2-y^2
then apply formula (a-b)(a+b)=a^2-b^2
so,,
(3-y)(3+y)
<span>38 - 7r = 3(6 - 4r)
38 - 7r = 18 - 12r
-7r + 12r = 18 - 38
5r = -20
r = -4</span>
