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Kay [80]
3 years ago
12

The area of a circle is 31.4 cm^2 what’s the radius

Mathematics
1 answer:
Scrat [10]3 years ago
8 0
A=(pi)(r^2)=(3.14)(r^2)=31.4
R^2=10
R=square root of 10
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3 years ago
Please answer this question now
liubo4ka [24]

Answer:

541.67m²

Step-by-step explanation:

Step 1

We find the third angle

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Angle V = 67°

Step 2

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We find these sides using the sine rule

Sine rule or Rule of Sines =

a/ sin A = b/ Sin B

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Finding side x

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To find the area of triangle VWX

We use heron formula

= √s(s - v) (s - w) (s - x)

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s = (38.22 + 37 + 31.81)/2

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Area of the triangle = √293402.209

Area of the triangle = 541.66614164081m²

Approximately to the nearest tenth = 541.67m²

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3 years ago
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Someone please help?
dybincka [34]

Answer:

42°

Step-by-step explanation:

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