Question

Plz Help ASAP!! Thank You :>

Answer 1

Answer and Step-by-step explanation:

7.

The volume of a cylinder is $\pi r^{2} h$, in which:

r = radius

h = height

d = 2 × r

$\pi$ will equal 3.14.

Plug it in to the equation.

$V = (3.14)(12^{2} )(42)\\\\\\\\V = (3.14)(144)(42)\\\\\\\\V = (452.16)(42)\\\\\\\\V = 18990.72cm^3$

18990.72 $cm^3$ is the answer. (2nd Answer choice)

8.

x = -2

Expression is:

$5 - x^2$

Plug -2 in for x.

$5 - (-2)^2\\\\\\\\5 - 4\\\\\\\\1$

1 is the answer choice. (1st Answer choice).

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