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Mathematics 21 Online
OpenStudy (anonymous):

Find the area. Use π = 3.14

OpenStudy (anonymous):

OpenStudy (anonymous):

area = πr^2 r = d / 2 d = 2.6

OpenStudy (anonymous):

Okay but I dont know how to set up the problem

OpenStudy (anonymous):

you have to find r, the radius, from using the diameter, d. r = d / 2 with d = 2.6 meters

OpenStudy (anonymous):

so its 2.6/2

OpenStudy (anonymous):

then find the area using r, the formula for area is π times r^2

OpenStudy (anonymous):

so then 1.3x2?

OpenStudy (anonymous):

oh does that mean |dw:1360790674220:dw|

OpenStudy (anonymous):

yes \[\huge 1.3^2 \pi\]

OpenStudy (anonymous):

okay so then its 5.309

OpenStudy (anonymous):

thanks @nphuongsun93

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