Question

find the value of p+q+r p=90 r=40 q=50

Answer 1

Hey friend,

Here is your answer,
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∠A + ∠B + ∠C = 180°

∠A + 50° + 40° = 180°

∠A = 90°

p = 90°
q = 130°
r = 140°

p+q+r = 90° + 130° + 140°
          = 360°

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Hope this helped you !!
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Answer 2

p=90° {right angle}. (1)
q=180°-50°=130°. (2)
r=180°-40°=140°. (3)
(1+2+3)=90°+130°+140°=350°.
{Done}