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nirvana33 [79]
3 years ago
10

The area of the trapezoid

Mathematics
1 answer:
8090 [49]3 years ago
7 0
The area of a trapezpid is 1/2h×(b1+b2)
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If bc is the diameter of the circle below, what is the area of the circle
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option a.

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15% = 0.15

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The sides OP and RO of triangle POR are produced to points S and T respectively. If ∠SPR = 145° and ∠POT = 115° , find ∠PRO
Margarita [4]

Answer:

\angle PRQ = 80

Step-by-step explanation:

Given

\angle SPR = 145^o

\angle POT = 115^o

See attachment

Required

Find \angle PRO

First, calculate \angle RPO

\angle RPO + \angle SPR = 180 --- angle on a straight line

So, we have:

\angle RPO + 145 = 180

Collect like terms

\angle RPO = 180 - 145

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Next, calculate PQR

\angle POR + \angle POT = 180

So, we have:

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Collect like terms

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So, PRO is calculated as:

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So, we have:

\angle PRO + 65 + 35= 180

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Collect like terms

\angle PRO = 180-100

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3 0
3 years ago
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