Find the area of a circle with radius, r = 19cm. Give your answer rounded to 3 SF.

Mathematics

1 answer:

Svet_ta [14]3 years ago

4 0

1130cm square
Area formula is pixr^2
Pi x 19^2 = 1134.1149...

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Step-by-step explanation:

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Ok so do 0.09/2 which is 0.045 then add 1 so you get 200•1.045^8 then you do 1.045^8= 1.422100.... so I did 1.422100•200 to get the final answer of 284.42

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Angle APR is vertical with Angle SPL. If Angle APR = 13x - 30, and Angle SPL = 3x + 70, what is the value of x?

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If APR and SPL are vertical angles, then we get that $\angle APR = \angle SPL$ . Given that $\angle APR = 13\cdot x -30$ and $\angle SPL = 3\cdot x + 70$ , we find that the value of $x$ is: