Question

1. Complete the following table.
S.No. Base Height Area of parallelogram
10 cm 3.6 cm
b)
136.8 cm
7.8 cm
50.7 cm
d) 7.5 m 528 cm
9 cm
528 cm​

Answer 1

Answer:

required formula:-

$area \: of \: parallelogram \: = base \times height$

$\huge\sf\underline{solution}$

let,

The area of the parallelogram be 'A'

base of the parallelogram be 'b'

height of the parallelogram be 'h'

.: A = b×h.

1)

b = 10cm

h = 3.6cm

A = b×h

= 10cm × 3.6cm

= 36cm.

.: Area of the parallelogram = 36cm.

2

h = 9cm

A = 136.8cm²

A = b×h

b = $\sf\dfrac{A}{h}$

b = $\sf\dfrac{136.8cm²}{9cm}$

b = 15.2cm

.: breadth of the parallelogram = 15.2cm

3)

b = 7.8cm

A = 50.7cm²

A = b×h

h = $\sf\dfrac{A}{b}$

h = $\sf\dfrac{50.7cm²}{7.8}$

h = 6.5cm

.: height of the parallelogram = 6.5cm

4)

b = 7.5cm

h = 528cm

A = b×h

= 7.5cm×528cm

= 3960cm²

.: Area of the parallelogram = 3960cm²

Answer 2

answer.

a). A=b×h

A=10×3.6

A=36cm²

b). A=b×h

136.8=b×9

136.8÷9=b

15.2=b

b=15.2cm

c). A=b×h

50.7=7.8×h

50.7÷7.8=h

6.5=h

h=6.5

d). A=?

b=7.5m

h=528cm=5.28m

then,

A=b×h

A=7.5×5.28

A=39.6m²