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RRB RPF RPSF SI and CONS Model Papers 8 with solutions
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© examsnet.com
Question : 47
Total: 120
The sides of a rectangular plot are in the ratio 5:4 and its area is equal to 500 sq.m. The perimeter of the plot is :
80m.
100m.
90m.
95m.
Validate
Solution:
(3) Area of rectangle = L × B
∴
5
x
×
4
x
=
500
sq.m.
or,
2
x
2
=
500
sq
.
m
∴
x
2
=
500
20
=
25
∴
x
=
5
L
=
5
×
5
=
25
m
B = 5 × 4 = 20 m
∴ Perimeter = 2 (L + B)m
= 2 (25 + 20) = 2 × 45 = 90 m
© examsnet.com
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