Answer:

Step-by-step explanation:
I haven't done this in a while, so I am very sorry if it is wrong, but I believe you take the angle measure of the part of the circle you need and put it over 360 then multiply by the formula for the area of a circle.
Answer:
4 to the 5th power
Step-by-step explanation:
since 4 is being multiplied by itself 5 times, then 5 becomes the exponent :)
Answer:
5z
Step-by-step explanation:
because I leaned it at school
Answer:
74 km/hr
Step-by-step explanation:
185 km / 2.5 hr = 74 km/hr
23 + 35 + A=180
58 + a =180
-58 -58
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A = 122 degrees