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20/12 or 1.66
Answer:
1.35
Step-by-step explanation:
Answer:
98.
Step-by-step explanation:
You have to do it in order so you can get the correct answer. Do the problem in the parenthesis first. 6 ÷ 3 = 2.
It should look like this:
7² x 2.
Then, do your exponents. 7² is just basically 7 x 7. It equals 49.
Now, it should look like this:
49 x 2. Multiply 49 x 2, and your answer should be 98.
First you need the formula for SA of a cylinder: SA = 2(πr^2) + 2πr*h
(area of the top and bottom circles plus the side)
Then plug your values into the equation and rearrange to make h the subject:
1470.3 = 2π13^2 + 2π*13*h
26πh = 1470.3 - 338π
h = (1470.3 - 338π)/26π
=5.00042...
so h is approximately 5 units :)
