**The radius of cone is 2 inches**

<em><u>**Solution:**</u></em>

<em><u>**The volume of cone is given by formula:**</u></em>

Where,

"V" is the volume of cone

"r" and "h" are the radius and height of cone respectively

**Given that, volume of a cone is 16 pi cubic inches**

Its height is 12 inches

Therefore, we get,

V = cubic inches

h = 12 inches

r = ?

<em><u>**Substituting the values in formula, we get**</u></em>

Since, radius cannot be negative, ignore r = -2

**Thus radius of cone is 2 inches**

**Answer:**

You would have to subtract 7/10

**Step-by-step explanation:**

87/10 - 7/10 would equal 8

Height = Volume / area of base

Area of base = 3.5 x 4 = 14 sq. inches.

Height = 84 / 14

Height = 6 inches.

**Answer:**

-39

**Step-by-step explanation:**

**Answer:**

Put those equations into desmos

**Step-by-step explanation:**