14.
1. 7 × 7 = 49
2. 7 × 3 × 3 = 63
3. 7 × 3 × 4 = 84
4. 7 + 3 + 4 = 14
Hope that helps! Feel free to ask for a more explanation, if needed.
3n - 5p + 2n = 10p
Since we are solving for n, you want to have all the terms containing the variable n on the left side of the equation and everything else on the right side.
Let's do this by adding 5p to both sides.
3n + 2n = 10p + 5p
Now combine like terms.
5n = 15p
Divide both sides by 5 since we are solving for the variable n.
n = 3p
The area of a circle with radius r is πr². So you need to find r such that
πr² = 56π
⇒ r² = 56
⇒ r = √56 = 2√14
