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vampirchik [111]
3 years ago
7

Anyone i need help with this

Mathematics
1 answer:
DIA [1.3K]3 years ago
4 0

Answer:

Step-by-step explanation:

a1=90-a2

a1=90-30=60

a2 is opposite 30 and opposite angles are equal so

a2=30

The sum of the angles of a triangle are equal to 180 degrees.

a2+a3+70=180

a3+30+70=180

a3=100=180

a3=80

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3 years ago
Use the formula for the area of a circle to solve for the radius of the circle if the area is 78.5cm^2
postnew [5]

Answer:

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Step-by-step explanation:


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3 years ago
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irina [24]

Answer and Step-by-step explanation:

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3 0
3 years ago
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SpyIntel [72]

Answer:

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