Question

In fig. 40, ABCD is a parallelogram of area 144 cm², the value of x is

(a) 8 (b) 6 (c) 9 (d) 10

Answer 1

$$\begin{gathered} \mathrm{Area}\mathrm{of}\mathrm{parallelogram}=\mathrm{Base}\times \mathrm{Height}= \\ \Rightarrow 144=16\times x \\ \Rightarrow x=\frac{144}{16}=9 \end{gathered}$$
Hence, the correct option is (c).