3 years ago

The diameter of the circle above is 86 cm. What is the circumference of the circle? (Use = 3.14.)

Mathematics

1 answer:

Harman [31]3 years ago

5 0

2(3.14)r = Circumference

r = d/2

r = 43

2 x 3.14 x 43 = 270.04 cm

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Jenny's mom is 36 years old. If Jenny's great-grandmother is 90 years old, what percent of Jenny's mother's age is Jenny's great

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Answer:

The age of Jenny's mom is 40 % of age of Jenny's great-grandmother. (Input: 40)

Step-by-step explanation:

The percentage needed is calculated by the following expression:

$x = \frac{n_{M}}{n_{G}}\times 100\,\%$

Where:

$x$ - Percentage of Jenny's mother with respect to Jenny's great-grandmother, measured in percentage.

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$n_{G}$ - Age of Jenny's great-grandmother, measured in years.

If we know that $n_{M} = 36\,yr$ and $n_{G} = 90\,yr$ , the percentage is:

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Step-by-step explanation:

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