Answer:
A = 143.2
Step-by-step explanation:
A= πr² = π(6.75)² =
× 45.5625 = 143.196 ≈143.2
Are you trying to combine? The answer would be 84.
Here are the basic steps to follow to simplify an algebraic expression:<span>remove parentheses by multiplying factors.
use exponent rules to remove parentheses in terms with exponents.
combine like terms by adding coefficients.
<span>combine the constants.</span></span>
80 + 5 is 85 in extended form