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The width of a rectangle is two- thirds its length. If the perimeter is 180 metres, find the length. * 45 54 50

Question

The width of a rectangle is two-

thirds its length. If the perimeter is

180 metres, find the length. *

45

54

50

56

The rectangle’s breadth will be *

30

35

33

36

*

in the above rectangle , if the breadth is increased by 18 which figure will be formed

*square

triangle

pentagon

if 4/5 parts of length is taken and 7/8 parts of the breadth is taken the new perimeter will be*

146.8

148.6

147.9

149.4

Find The area of new rectangle*

1345.9

1360.8

1367.3

1354.5

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Math
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2021-09-07T13:37:02+00:00
2021-09-07T13:37:02+00:00 2 Answers
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## Answers ( )

Step-by-step explanation:b=2l/3

perimeter=2(l+b)

180=2(l+b)

by substituting b in terms of l and solve it to get

l=54

b=36

and if we increase the width by 18 then it will become a square.

and 4/5 parts of length is 43.2

7/8 parts of width is 31.5

new perimeter is 149.4

new area is 1360.8.

Step-by-step explanation:let length =x

breadth = 2x/3

perimeter = 2(x+2x/3) =180

2(3x+2x/3)=180

6x+4x/3=180

10x=540

x=54= length

breadth =2/3×x=36

breadth+18= 54

then l=b

the figure is a square

then4/5l +7/8b=

216/5=l and 7/8 × 36

43.2 = l and 31.5 = b

p= 2(l+b)

=2(43.2+31.5)=

149.4

area = 43.2× 31.5

1360.8

hope u understand