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Ndow2
16.09.2019 •
Mathematics
Jesse is sanding a circular wooden table that has a diameter of 6 ft. she can sand 5 square feet every hour.
at this rate, approximately how long will it take jesse to finish sanding the table?
use 3.14 for pi.
a. 3.8
b. 5.7
c. 22.6
d. 30.0
Solved
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Ответ:
Option B![5.7\ hours](/tpl/images/0231/8860/e78e0.png)
Step-by-step explanation:
step 1
Find the area of a circular wooden table
The area of a circle is equal to
we have
substitute
step 2
we know that
Jesse can sand
square feet every hour
By proportion
Find how long will it take Jesse to finish sanding the table
Ответ:
3 rolls of dimes and 8 rolls of nickels
hope it helps :]