a rectangle is 10 inches by 6 inches whose sides are changing. write a formula for both the perimeter and how fast each is changing in terms of L and W

how do i do this, an explanation instead of an answer would be most appreciated, thanks in advance.

  1. 👍 0
  2. 👎 0
  3. 👁 79
asked by eric
  1. express P and A as a function of L and W

    Then just use the chain rule to find the derivative (d/dt)

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    write a ratio comparing widths, lengths, and the perimeter of a rectangle 6 inches by 9 inches and a rectangle 8 inches by 12 inches. Show whether these are are equivalent or not.

    asked by Jeremiah on October 13, 2013
  2. Calculus

    A rectangle is 2 feet by 15 inches. Its length is decreasing by 3 inches/minute and its width is increasing at 4 inches/minute. How fast is the a) perimeter changing b) area changing

    asked by Anonymous on November 2, 2014
  3. Geometry

    1.What is the perimeter of a rectangle with width 10 inches in length 13 inches? A.23inches B.36inches C.46inches*** D.130inches 2.What is the area of a triangle with base 19 inches and height 11 inchinches? A.209square inches

    asked by GummyBears18 on September 6, 2016
  4. geometry

    A rectangle measures 6 inches in length by 9 inches in width. If the rectangle will be enlarged by 250%, what will be the lengths of the sides of the new rectangle? What percent bigger is the perimeter of the new rectangle,

    asked by Kalem on May 17, 2011
  5. Algebra

    The length of a rectangle is (x+2) inches. The width of the rectangle is (x+1) inches. Write an equation that can be used to determine the area (A) of the rectangle in terms of x. What is the value of x if the area of the

    asked by Amber on May 16, 2013
  6. Math

    1) Rectangle ABCD has a perimeter of 106 inches. If the width is 7 inches, what is the length? 2) If X=7 inches, Y=11 inches, Z=15 inches, and H=6 inches, what is the area of the triangle?

    asked by Stupid Person on December 23, 2011
  7. Algebra 2

    Can you double check my answer The lengths of the sides of a rectangular window have the ratio 1.6 to 1. The area of the window is 2,560 square inches. What are the dimensions of the window? (1 point) 50.6 inches by 50.6 inches 40

    asked by Robert on November 18, 2012
  8. Math 8

    A stop sign has each side measures of 12.4 inches, and the distance from any side to the opposite side is 30 inches. Divide the stop sign into one rectangle and two trappezoids. What are the dimensions of the rectangle and each of

    asked by Lisa on April 9, 2017
  9. Math

    the length of a rectangle is (x-3) inches long, and the width 3 2/5 inches. If the area is 15 3/10 square inches, write and solve an equation to find the length of the rectangle

    asked by Johnathen on March 8, 2016
  10. MATH

    Li-Hua wants to create a triangular fame. She has two pieces of wood, which are 6 inches long and 9 inches long, to use for two sides of the triangle. Which of the following CANNOT be the lenth of the third frame and why? a) 4

    asked by andra on October 16, 2013

More Similar Questions