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BlackZzzverrR [31]
3 years ago
15

The sum of two circles is 80 pi square meters. Find the length of a radius of each circle if one of them is twice as long as the

other. What is the radiusof the larger circle?
The big circle has a radius of - 2r
The small circle has a radius of - r
Never mind u guys didn't help me in enough time i only got a 30% on my TESTTTTTTTT
Mathematics
1 answer:
timurjin [86]3 years ago
3 0

Given:

sum of two circles is 80 pi square meters

big circle has a radius of - 2r
small circle has a radius of – r

Required:

r

Solution:

2r + r = 80 pi square meters

3r = 80 pi square meters

r = 26.67 pi meters

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Step-by-step explanation:

*Missing Part of the Question*

4 stars

5 triangles

3 circles

3 squares

Required

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Total = 4 + 5 + 3 + 3

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Represent the triangle with T and square with S

So, we're solving for P(T n S)

P(T\ n\ S) = P(T) * P(S)

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P(S) = \frac{n(S)}{Total}

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P(T\ n\ S) = P(T) * P(S)

P(T\ n\ S) = \frac{5}{15} * \frac{3}{14}

P(T\ n\ S) = \frac{15}{15 * 14}

P(T\ n\ S) = \frac{1}{14}

Hence, the required probability is

P(T\ n\ S) = \frac{1}{14}

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