Answer:2.5 I just took the test
Step-by-step explanation:
1st step is to find the radius, then substitute into the formula for area of a circle

to find the radius, just halve the diameter
Answer:
Step-by-step explanation:
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You would need to know the length of two sides either a2, b2, c2. you would also need to know what sides you are solving for, either one of the legs or hypotenuse. hope this helps, if you know how to solve a Pythagorean theorem problem this should be easy to answer