8. Find the missing sides of the following
rectangles.
A. Area = 20 cm, L = 10 cm
B. Area = 46 cm, L = 23 cm
-C. Area = 40 cm, B = 4 cm
D. Area = 30 cm, B = 4 cm
E. Area = 56 m, B = 700 cm
F. Areq = 42 m, L = 2,000 cm
Answers
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Step-by-step explanation:
A. Given : Area = 20 cm. and Length : 10cm.
let Breadth = b
Area of rectangle = l×b
20 cm. = 10 × b
b= 20/10 cm.
b= 2 cm.
B. Given : Area = 46 cm. and Length : 23cm.
let Breadth = b
Area of rectangle = l×b
46 cm. = 23× b
b= 46/23
b= 2 cm.
C. Given : Area = 40 cm. and Breadth: 4cm.
let length = l
Area of rectangle = l×b
40cm. : l× 4
l= 40/4
l= 10 cm.
D. Given : Area = 30 cm. and breadth : 4cm.
let length = l
Area of rectangle = l×b
30cm. : l× 4
l= 30/4
l= 7.5 cm.
E. Given : Area =56 m. and breadth : 700cm.
56 m= 5600cm
let length = l
Area of rectangle = l×b
5600cm. : l× 700
l= 5600/700
l= 8 cm.
F. Given : Area = 42m and Length : 2000cm.
42m= 4200cm.
let Breadth = b
Area of rectangle = l×b
4200cm. : 2000 × l
l= 4200/2000
l= 2.1
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