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viva [34]
2 years ago
13

The radius of a circle is 5 cm. What is the radius of another circle whose area is 25 times that of the first one?

Mathematics
1 answer:
zhannawk [14.2K]2 years ago
4 0

Answer:

Step-by-step explanation:

a₁ = πr₁⁵ = 25π cm²

a₂ = 25(25π) = 625π cm²

r₂ = 25 cm

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Answer:

Explanation:

The statement is expressed as

y

∝

1

x

inverse means

1

variable

To convert to an equation introduce k, the constant of variation.

y

=

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×

1

x

⇒

y

=

k

x

To find k use the given condition that y = 8 when x = 4

8

=

k

4

⇒

k

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4

×

8

=

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⇒

equation is

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

∣

∣

∣

2

2

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=

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x

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2

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∣

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→

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