Answer
a). $4.65 cm, 9.97cm$,
b). $23.18cm^{2}$,
c). $25.62cm$.
Work Step by Step
a). Two known angles are $90^{\circ}$ and $25^{\circ}$. So, the third angle is $65^{\circ}$, since sum of angles of a triangle is $180^{\circ}$
Hypotenuse = 11cm.
So, other sides =$11cos65^{\circ}=4.65 cm$
and $11sin 65^{\circ}=9.97cm$
b). Area=$0.5\times4.65\times9.97cm^{2}=23.18cm^{2}$
c). Perimeter = $11+4.65+9.97=25.62cm$
