Answer:
D) 8 cm
Step-by-step explanation:
17² = length² + 15²
length² = 289 - 225 = 64
length = 8 cm
The height of the envelope is 8cm.
We have given that, an An envelope is 15 centimetres wide, and it measures 17 centimetres along the
diagonal.
Diagonal=17cm
length =15cm
We have to calculate the height of the envelope
So by using Pythagoras theorem
[tex]hypotenuse^{2}= height^2+length^2[/tex]
Therefore by using Pythagoras theorem we have,
[tex]17^2 = height^2+ 15^2[/tex]
[tex]height^2 = 289 - 225 = 64[/tex]
[tex]height = 8 cm[/tex]
Therefore we get the height of the envelope is 8cm.
To learn more about the Pythagoras theorem visit:
https://brainly.com/question/343682
