Answer:
its C (l = l equals StartFraction S Over pi minus r squared. – r2)
Step-by-step explanation:
i guessed and got it right(:
130 because your other angle be is 50 which completes the triangle. Angle f 40 Angle C 90 Angle B 50. 180 - 50 = 130
Answer:

Step-by-step explanation:
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=
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7 over 8 can be seen as

or 7÷8.
This is what this question will look like on a calculator.

As you can see, you will only get 0.875 so your answer will be terminating.
Terminating = Answer Stops
ex.) 0.784 or 0.25
Repeating = Answer Repeats
ex.) 0.5555... or 1.33...