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o-na [289]
3 years ago
13

The ratio of the length and breadth of a rectangle is 5:4 and its area is 180 cm

Mathematics
1 answer:
Fed [463]3 years ago
6 0

Answer:

Length = 15 cm, width = 12 cm, Perimeter = 54 cm

Step-by-step explanation:

The ratio of the length and breadth of a rectangle is 5:4 and its area is 180 cm².

Length = 5x

Breadth = 4x

Area of rectagle,

A = bl

180 = 5x × 4x

180 = 20x²

x² = 9

x = 3

Length = 5x = 5(3) = 15 cm

Width = 4x = 4(3) = 12 cm

Perimeter of rectangel,

P = 2(l+b)

= 2(15+12)

= 54 cm

Hence, this is the required solution.

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Answer:

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Step-by-step explanation:

First, note that 10000 multiplied by .5625 will get rid of the decimal point. Therefore, make a fraction where the numerator is .5625 times 10000 and denominator is 10000 like this:

   

.5625 x 10000

 

   

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Next, multiply the numbers in the numerator together and keep the denominator as is. Now our fraction looks like this:

   

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