SOLUTION: Kristen is constructing a circular outdoor patio built from paving stones. The diameter of the patio will be 15 m. One bundle of paving stones covers 120 sq. ft. Kristen has orde

Algebra ->  Average -> SOLUTION: Kristen is constructing a circular outdoor patio built from paving stones. The diameter of the patio will be 15 m. One bundle of paving stones covers 120 sq. ft. Kristen has orde      Log On


   

Question 1154849: Kristen is constructing a circular outdoor patio built from paving stones. The diameter of the patio will be 15
m. One bundle of paving stones covers 120 sq. ft. Kristen has ordered 12 bundles of paving stones. Did she
order enough paving stones?
Found 3 solutions by mananth, ikleyn, josgarithmetic:
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!

The diameter of the patio is 15m . r=7.5m

Area of circle = pi*r^2
Area = pi*(7.5)^2 =176.7 ~ 177
One bundle of paving stones covers 120 sq. ft.
Kristen has ordered 12 bundles of paving stones.
Now you decide.
Check coverage per bundle

Answer by ikleyn(52814) About Me  (Show Source):
You can put this solution on YOUR website!
.

Dear tutor mananth,

please read the problem and see that the diameter (and hence the radius) is given in meters, while other dimensions are given in feet.

It is not for the first time I observe that you start solving the problem even without reading attentively the condition.


I have no enough physical strength to fix after each and every tutor at this forum . . .



Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
---
Area of the circular patio:


pi%2815%2F2%29%5E2%2A100%5E2%2A%281%2F2.54%29%5E2%2A%281%2F12%29%5E2%2Aft%5E2---------compute this number of square feet for the patio.

Now, is 12 bundles enough?