rectangle has perimeter of 32'; find max area

Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.
uptown4784
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rectangle has perimeter of 32'; find max area

Postby uptown4784 » Wed Dec 19, 2012 11:42 pm

A rectangle has a perimeter of 32 ft. Find the maximum area of the rectangle

Find the equation of the circle (in standard form) with radius 7 and center

got my wisdom teeth removed today. wasnt able to make it to class

theshadow
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Re: rectangle has perimeter of 32'; find max area

Postby theshadow » Thu Dec 20, 2012 12:06 am

uptown4784 wrote:A rectangle has a perimeter of 32 ft. Find the maximum area of the rectangle

they show how to set this up and get the answer here

uptown4784 wrote:Find the equation of the circle (in standard form) with radius 7 and center

put 7^2 for r and the origin for the center in the circle eqn

buddy
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Re: rectangle has perimeter of 32'; find max area

Postby buddy » Sat Dec 22, 2012 7:27 pm

uptown4784 wrote:A rectangle has a perimeter of 32 ft. Find the maximum area of the rectangle

32=2L+2W, A=LW
solve 1st for one of the vars. plug into 2nd. find vertex to find max.

uptown4784 wrote:Find the equation of the circle (in standard form) with radius 7 and center

r=7, r^2=7^2=49, (h,k)=(0,0)
plug into (x-h)^2+(y-k)^2=r^2


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