Trig and geometry: the area, perimeter and size of a cyclic quadrilateral

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

Hello atom360

Quote:

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Originally Posted by atom360

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

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Please check the question. It's impossible to answer with the information you've given (except for part (i), which is $\displaystyle 80^o$). There are infinitely many cyclic quadrilaterals with different shapes and sizes that can be drawn with these dimensions.

Grandad