4 years ago

A. What is the circumference of the

Mathematics

1 answer:

Xelga [282]4 years ago

5 0

Answer:

Step-by-step explanation:

a. The diameter of the circle will be 30 cm

So circumference is 3.14 * 30 = 94.2 cm.

b. Required percentage = (94.2) * 100 / (4*30)

= 78.5%.

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3 years ago

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Philip jogged 3 1/2 miles yesterday in 7/8 of an hours what is his constant of proportionality

marishachu [46]

Answer:

4 miles per hour

Step-by-step explanation:

Let the miles jogged be directly proportional to the hours taken hence we say that m=kh where m is miles, k is constant of proportionality and h is the number of hours. Making k the subject of the formula then $k=\frac {m}{h}$ . Substituting miles jogged with 3.5 miles and hours with 7/8 hours as given then