High School

10. Seven lengths of wood are needed to make this gate. Find the total length of wood needed, giving your answer in metres, correct to one decimal place. Chapter 23 Trigonometry -2.5m- 1.5m​

10 Seven lengths of wood are needed to make this gate Find the total length of wood needed giving your answer in metres correct to

Answer :

The total length of wood needed is 15. 9 meters

How to determine the total length

The formula for calculating the perimeter of a rectangle is expressed with formula;

P = 2(l + w)

Such that the parameters given in the formula are;

  • P is the perimeter of the rectangle.
  • l is the length of the rectangle.
  • w is the width of the rectangle.

Then, we have;

Width = 2. 5m

Length = 1. 5m

Total length = 2(1.5) + 4(2.5) = 3 + 10 = 13 + x meters

Using the Pythagorean theorem

x² = 6. 25 + 2. 25

x = 2. 92

Total length = 13 + 2. 92 = 15. 9 meters

Learn about rectangles at: https://brainly.com/question/25292087

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