What is the area of a right triangle with a height of 9 and side of 15?

1 Answer
Apr 4, 2018

#54units^2#

Explanation:

#15units=#hypotenuse

#9units=#opposite

Adjacent:-

By Pythagoras

#:.a^2+b^2=15^2#

#:.a^2+9^2=15^2#

#:.a^2=15^2-9^2#

#:.a^2=225-81#

#:.a^2=144#

#:.a=sqrt 144#

#:.a=12=# Adjacent= base

Area of #triangle=1/2 base xx height#

#:.=1/2xx12xx9=54 units^2#