C = 18
because find the radius by dividing by pi and square-rooting, then multiplying the radius by 2 to get the diameter. Then multiply by pi to get the circumference
Find the solution of a(-12 + a) = 0
1 answer:
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Using the rule of angles in parallel lines, ∠Q and ∠R are supplementary to each other
∠Q+∠R = 180°
Size of ∠Q = 25+15 = 40°
Size of ∠R = 6(25) - 10 = 140°
∠Q also supplementary with ∠P, hence ∠P = 140°
∠P supplementary with ∠S, hence ∠S = 40°
∠Q+∠R = 180°
Size of ∠Q = 25+15 = 40°
Size of ∠R = 6(25) - 10 = 140°
∠Q also supplementary with ∠P, hence ∠P = 140°
∠P supplementary with ∠S, hence ∠S = 40°