Question 277747
8^2+15^2=x^2
64+225=x^2
289=x^2
x=sqrt289
x=17 cm.
8^2+y^2=15^2
64+y^2=225
y^2=225-63
y^2=161
y=sqrt161
y=12.7
17+12.7=29.7 ans C) for the sum of x+y.