A=Lw
P=2L+2w
216=Lw
W=216/L...substitute to Perimeter equation
60=2L+2(216/L)
60L=2L^2 + 432
2L^2-60L+432=0
2(L^2 - 30L + 216)=0
2(L-18)(L-12)=0
L=12, W=18 or L=18, W=12
Pi is simply the ratio of the circumference to the diamater, what that means is<span>π=<span>Cd</span></span>(C is circumference, d is diameter) or, likewise<span>πd=C</span>So the circumference for your ice-cream cone is simply<span>πd=3.14∗2.25=7.065=C</span>So the circumference is 7.065 inches.
The area of a triangle is found using the formula Area = 1/2 x base x height.
Base = 8
Height = 18.
The area of 1 triangle = 1/2 x 8 x 18 = 72 square units.
There are a total of 4 sides, so total area = 72 x 4 = 288 units ^2
First you have to calculate 70% of $2240...
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