Please help

ABCD is a cyclic quadrilateral with <DAB=100º, AB=7cm and BC= 8cm

i) the size of <BCD

ii) the size of <ADC

iii)the perimeter of the quadrilateral

iv)The area of the quadrilateral

I know that in geometry, a cyclic quadrilateral is a quadrilateral whose vertices all lie on a single circle.

Help is greatly appreciated