The length of a rectangle is three time its width and the of its diagonal is 6 root under 10 perimeter of the rectangle is
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Suppose value of width ( breath ) is equal to
Than, value of length is three times of breath.
Diagonal is hypotenuse of right triangle which sides are length and breath.
mitajoshi11051976:
from delhi
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let the width of rectangle be x
the length of rectange is 3x
Therefore,
by Pythagoras theorem
(6root under 10)sq = x sq + (3x)sq
(6root under 10)sq = x sq +9x sq
(6root under 10)sq =10x sq
36×10=10x sq
10x sq=36 × 10
x sq=36
x =under root 36
x= 6 cm
Therefore,
The width of rectangle = 6
The length of rectangle = 6×3
=18
Therefore Now,
The perimeter of rectangle = 2(length + width)
=2(6+18)
=2×24
=48 cm
plz make me brain list..
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