What’s the diameter of the circle of the circumference is 30 pi inches
2 answers:
Answer:
Step-by-step explanation:
The circumference formula for a circle is
or
We'll use the second one since our problem wants us to find diameter. If we know that the circumference is 30π, then we will sub in 30π for C and solve for d:
30π = πd so
30π/π = d
The π's cancel out, leaving us with a diameter of 30 inches.
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There are 270 pages in this book.
Given that,
Emily reads a storybook the first day,
She reads 1/9 of the whole book, and on the second day, she reads 24 pages.
The ratio of the number of pages read to the remaining pages in the two days is 1:4.
We have to find
How many pages are there in this book?
According to the question,
Let, P is the number of pages,
The first day Emily reads p/9 pages of the whole book,
And the second day she read 24 pages.
The ratio of the number of pages read to the remaining pages in the two days = 1;4 = p/5.
Therefore,
The number of pages reads first day + the number of pages read the second day = The ratio of the number of pages read to the remaining pages in the two days
Hence, there are 270 pages in this book.
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