Question

ABCD is a rhombus. If AC=6cm and BD = 9 cm, find ar(ABCD)

Answer 1

area =1/2×d1 ×d2
=1/2×6×9=27
27 cm^2

Answer 2

$ar(abcd) = 1 \div 2(d1 ×d2)$
ar(ABCD)=1/2×6×9
=3×9
=27cm^2