(a) \(\text{Area of parallelogram} = \text{Base }× \text{Height }\)
= \(SR × QM\)
= \(7.6 × 12 = 91.2 \;cm^2\)
(b) \(\text{Area of parallelogram} = \text{Base }× \text{Height }\)
= \(PS × QN\)
= \(91.2 \;cm^2\)
\(\Rightarrow QN × 8 = 91.2\)
\(\Rightarrow QN = \frac{91.2}{8}=11.4\;cm\)