Question 186758
a^2+b^2=c^2
9^2+b^2=15^2
81+b^2=225
b^2=225-81
b^2=144
b=sqrt144
b=12
a*b+c=perimeter.
8+12+15=35 cm. is the perimeter.
Area=ab/2
8*12/2=96/2=48 cm^2 is the area.