Question

Brenda is buying a computer monitor that is 25 centimeters tall and has a distance of 65

centimeters between opposite corners. What is the width of Brenda's new monitor?
centimeters

Answer 1

Look at the diagram and apply Pythagorean theorem

`\\ \tt\hookrightarrow x^2=65^2-25^2`

`\\ \tt\hookrightarrow x^2=4225-625`

`\\ \tt\hookrightarrow x^2=3600`

`\\ \tt\hookrightarrow x=60cm`

Answer 2

• 60 cm

Explanation:

Use Pythagorean.

The width and height are the legs and the diagonal is the hypotenuse of the right triangle.

• 
  `w = √(d^2-h^2)`

• 
  `w = √(65^2-25^2) =√(4225-625) =√(3600) =60`