Answer:
550
Step-by-step explanation:
Answer:314
Step-by-step explanation: To find area you use the formula πr^2. Your radius is 10 (since it is half your diameter). Plug it in to get π(10)^2. or 100π. Then just substitute 3.14 for π. You have 100 times 3.14 which equals 314
Divide 9.3 by 3.1:
9.3 / 3.1 = 3
subtract the exponents: 34 -17 = 17
then turn those into scientific notation:
3 x 10^17
1 + 1 + 20 cents + 3 cents = $2.23
