Question

5. PQRS is a parallelogram (Fig 11.23). QM is the height from Q
to SR and QN is the height from Q to PS. If SR = 12 cm and
QM=7.6 cm. Find:
(a) the area of the parallegrar PORS (b) ON, if PS=8 cm
M​

Answer 1

We have,

given that,

QM as height = 7.6 c.m

SR as base = 12 c.m

We know that,

(i) Area of parallelogram = Base × Height

SR×QM

=12×7.6

Area of parallelogram = 91.2c.m

2

(ii) find QN, if PS = 8 c.m.

According to the given figure.

Base PS = 8 c.m

Height QN = ?

We know that,

Area of parallelogram = PS×QN

91.2=8×QN

QN=

8

91.2

QN=11.4c.m

Hence, this is the answer.