Question

Please can u help me with geometry work !!!

Answer 1

The first one can be done by Pythagoras theorem such as
`12^2=9^2+x^2` then
`x^2=63` then
`x= √(63)`

The second one can also done by Pythagoras theorem, note that this is isosceles triangle so
`y=z`, again by using Pythagoras theorem
`15^2=y^2+z^2=y^2+y^2 or =z^2+z^2` then
`225=2y^2` then
`y= \sqrt{(225)/(2) }`

For the last one can also done by property of 30-60-90 triangle.
`w=8 √(3)`
`k=2.8=16`