Answer:
exact area = 81π in.²
approximate area = 254.34 in.²
Step-by-step explanation:
Exact:
area = πr²
r = radius = diameter/2 = 18 in./2 = 9 in.
area = πr²
area = π × (9 in.)²
area = 81π in.²
exact area = 81π in.²
Approximate:
π = 3.14 (approximately)
area = πr²
area = 81π in²
area = 81 × 3.14 in.²
approximate area = 254.34 in.²
Answer:
5√13
Step-by-step explanation:
a^2 + b^2 = c^2
10^2 + 15^2 = c^2
100 + 225 = c^2
√325 = c
5√13 = c
I have no clue, what is your question is?
Ok the idea here is to pull out something common to both of those numbers, but what's left inside the parenthesis cannot share anything common. So here's the first one: pull out a 3 and what is left inside the parenthesis is (2+7); #2. 9(3+5); #3. 16(2+3); #4. 8(11+3); #5. 15(2+5)