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lisov135 [29]
3 years ago
11

3 of 8 The area of a circle is 16.71cm2. Find the length of the radius rounded to 2 DP.

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
6 0

Answer:

Radius = 2.31 cm

Step-by-step explanation:

Area of circle = 16.71 square centimeters

\pi r^2 = 16.71 \\3.14r^2=16.71\\r^2=\frac{16.71}{3.14}\\r^2=5.32\\\sqrt{r^2}=\sqrt{5.32}\\r=2.306

Radius of circle = 2.31 centimeter

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Step-by-step explanation:

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At Fireside Bookshop, you buy a book for $30.00. If the sales tax is 9.5%, what is the total price you pay for the book?
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A tin of biscuits contains shortbread and choc-chip biscuits in the ratio 2:3 . The tin contains 80 biscuits. How many short-bre
Aleksandr [31]

Answer:

32

Step-by-step explanation:

There are 80 biscuits inside the tin.

Also, they said that those biscuits are in the ratio

Short bread    :      Choc - chip

          2          :        3

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And now you can divide 80 by 5 to find how many biscuits contain per a share.

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Let us find that.

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Number of short biscuits ⇒ 2 × 16

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Hope this helps you :-)

5 0
3 years ago
Jason complete 5/8 of his test and 10/25 of his homework. What fraction of his homework does he still need to complete?
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Answer:

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Step-by-step explanation:

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3 years ago
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