Please help Me!! D: There is a pi in there in 972.

Mathematics

2 answers:

Nana76 [90]3 years ago

7 0

V = 4/3 pi r^3

r^3 = 3V / 4pi

r^3 = (3 * 972pi) /(4pi)

r^3 = 729

r = 9

Answer

B. 9 inches

Komok [63]3 years ago

3 0

V = 4/3 π r³

Given that v = 972π

972π = 4/3 π r³

\\Multiply by 3 on both sides

2916π = 4 π r³

\\ Divide by 4π on both sides

729 = r³

\\cube root both sides

∛729 = r

9 = r

Answer: r = 9 inches

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Sonja [21]

The LCM is 24.
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6 0

3 years ago

HELP PLZ DUR 11;59 plz help me

Norma-Jean [14]

Answer:

Base = 10 cm

Height = 60 cm

Step-by-step explanation:

The formula for the area of a triangle is $area=\frac{1}{2} *b*h$ , where <em>b</em> is the length of the base of the triangle, and <em>h</em> is the length of the height of the triangle.

We know the area is 300, and since the height of the triangle is 6 times its base, we know that $h=6*b$ . We can plug in these values into our formula for the area of a triangle, which gives us the following equation to solve:

$300=\frac{1}{2} *b*(6*b)$

$3b^2=300$

$b=\sqrt{100} =10$

The base of the triangle is 10 centimeters.

Now that we know the base of the triangle, we can plug its value in to the original formula to solve for the height of the triangle, which gives us the following equation:

$300=\frac{1}{2} *10*h$