Question

Fill in the right numbers in the blanks.

S. No.	(1)	(2)	(3)	(4)	(5)	(6)	(7)
Length	4.2 m	.....	19.3 m	135.9 cm	11.6 m	......	44.7 cm
Breadth	......	3.5 cm	......	4.5 cm	......	6 m	1.5 cm
Area of rectangle	15.96 sq m	33.95 sq cm	54.04 sq m	......	58 sq m	152.4 sq m	......

Answer 1

(1) Length of the rectangle = l = 4.2 m
Let the breadth of the rectangle be b m.
Area of the rectangle = 15.96 m²
length × breadth = 15.96
4.2 × b = 15.96
$b=\frac{15.96}{4.2}$ (On dividing both sides by 4.2)
b = 3.8 m
∴ Breadth of the rectangle is 3.8 m.

(2) Let the length of the rectangle be l cm.
Breadth of the rectangle = 3.5 cm
Area of the rectangle = 33.95 cm²
length × breadth = 33.95
l × 3.5 = 33.95
$l=\frac{33.95}{3.5}$ (On dividing both sides by 3.5)
l = 9.7 cm
∴ Length of the rectangle is 9.7 cm.

(3) Length of the rectangle = l = 19.3 m
Let the breadth of the rectangle be b m.
Area of the rectangle = 54.04 m²
length × breadth = 54.04
19.3 × b = 54.04
$b=\frac{54.04}{19.3}$ (On dividing both sides by 19.3)
b = 2.8 m
∴ Breadth of the rectangle is 2.8 m.

(4) Length of the rectangle = 135.9 cm
Breadth of the rectangle = 4.5 cm
Area of the rectangle = Length × Breadth
= 135.9 × 4.5 cm²
= 611.55 cm²

(5) Length of the rectangle = l = 11.6 m
Let the breadth of the rectangle be b m.
Area of the rectangle = 58 m²
length × breadth = 58
11.6 × b = 58
$b=\frac{58}{11.6}$ (On dividing both sides by 11.6)
b = 5 m
∴ Breadth of the rectangle is 5 m.

(6) Let the length of the rectangle be l cm.
Breadth of the rectangle = 6 m
Area of the rectangle = 152.4 m²
length × breadth = 152.4
l × 6 = 152.4
$l=\frac{152.4}{6}$ (On dividing both sides by 6)
l = 25.4 m
∴ Length of the rectangle is 25.4 m.

(7) Length of the rectangle = 44.7 cm
Breadth of the rectangle = 1.5 cm
Area of the rectangle = Length × Breadth
= 44.7 × 1.5 cm²
= 67.05 cm²

S. No.	(1)	(2)	(3)	(4)	(5)	(6)	(7)
Length	4.2 m	9.7 cm	19.3 m	135.9 cm	11.6 m	25.4 m	44.7 cm
Breadth	3.8 m	3.5 cm	2.8 m	4.5 cm	5 m	6 m	1.5 cm
Area of rectangle	15.96 sq m	33.95 sq cm	54.04 sq m	611.55 sq cm	58 sq m	152.4 sq m	67.05 sq cm