Answer:
D) 84 m^3
Step-by-step explanation:
The volume of a cylinder is given by
V = pi r^2 h
the base area is pi r^2
V = B h
We know the base area is 28.2 and the height is 3.1
V = 28.2 * 3.1
V =87.42
To estimate, round each value to the nearest whole number
V = 28 * 3
V =84
So 4 triangular faces of the pyramid will have total area
<span>= 4 ×<span>12 </span>× base × height = 4 × <span>12 </span>× 34 × 58f<span>t2 </span>= 3944f<span>t2</span></span>
So <span>3944f<span>t2</span></span> of marble cover the faces of the pyramid.
<h2><u>The value of x is equal to 6.</u></h2>
2 + 3x = 20
Subtract 2 from both sides.
3x = 18
Divide both sides by 3.
x = 6
Answer:
you should know this. you tell me how many?
Answer:
-6
Step-by-step explanation:
f(x) = -x-1
Find f(5), <u><em>this means that anywhere you see </em></u><u><em>x</em></u><u><em>, you substitute in </em></u><u><em>5</em></u><u><em>.</em></u>
f(x) = -x-1
f(5) = -(5)-1
<u>Take note of the signs.</u>
f(5) = -6
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