A piece of wire 27 m long is cut into two pieces. One piece is bent into a square and the other bent into an equilateral triangle. (a) How much wire should be used for the square in order maximize the total area? DNE (b) How much wire should be used for the square order minimize the total area? 24V3

Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter59: Areas Of Rectangles, Parallelograms, And Trapezoids
Section: Chapter Questions
Problem 79A
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A piece of wire 27 m long is cut into two pieces. One piece is bent into a square and the other is bent into an equilateral triangle.
(a) How much wire should be used for the square in order to maximize the total area?
DNE
m
(b) How much wire should be used for the square in order to minimize the total area?
24/3
3+ 4V3
Enhanced Feedback
Please try again and draw a diagram. Keep in mind that the area of a square with edge a is As
b²V3
a and the area of an equilateral triangle with edge b is Aț =.
Let x be the perimeter of the square, which means x = 4a, and y be the perimeter of
4
the triangle, which means y = 3b. Find a relationship between x and y, considering that the wire's length / is a constant and / = x + y. Rewrite the total area A = As + A¢ as a function of one variable. Use calculus to find the edges of the square and
¡the triangle that maximize the area; then find the edges that minimize the area.
Transcribed Image Text:A piece of wire 27 m long is cut into two pieces. One piece is bent into a square and the other is bent into an equilateral triangle. (a) How much wire should be used for the square in order to maximize the total area? DNE m (b) How much wire should be used for the square in order to minimize the total area? 24/3 3+ 4V3 Enhanced Feedback Please try again and draw a diagram. Keep in mind that the area of a square with edge a is As b²V3 a and the area of an equilateral triangle with edge b is Aț =. Let x be the perimeter of the square, which means x = 4a, and y be the perimeter of 4 the triangle, which means y = 3b. Find a relationship between x and y, considering that the wire's length / is a constant and / = x + y. Rewrite the total area A = As + A¢ as a function of one variable. Use calculus to find the edges of the square and ¡the triangle that maximize the area; then find the edges that minimize the area.
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