**Answer:**

9π

**Step-by-step explanation:**

D = r/2 = 6

r = 3

A = r²π

9π = A

**Answer:**

The error was that -10+(-10) does not equal 0.

-10+(-10) = -10-10 = -20

Let me know if this helps!

**Answer:**

p equals two and four tenths

**Step-by-step explanation:**

First let's write our equation

five p plus three equals fifteen

<h3>Subtract three from both sides</h3><h3 />

five p equals twelve

divide both sides by 5

p equals two and four tenths

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Word Problem

You bought 5 pears that were worth x dollars, you have an extra 3 dollars, the total of the money you spent and you have is 15 dollars. How much does one pear cost?

Standard form is: ax + by + c

8 - 5y = -2x

8 (-8) - 5y (+5y) = -2x (-8) (+5y)

**-2x + 5y -8 **is your standard form

hope this helps

**Answer:**

V = 1020.5 yd³

**Step-by-step explanation:**

The volume (V) of a cylinder is calculated as

V = πr²h( r is the radius and h the height )

Here r = 5 and h = 13 , then

V = π × 5² × 13

= 3.14 × 25 × 13

= 1020.5 yd³