Question

The length of a rectangle is three times of its width. If the length of the diagonal is 8/10 m,
then the perimeter of the rectangle is


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Answer 1

Answer:

Let the breadth be x cm, then , length = 3x cm .

∴diagonal =√(3x)2+x2cm=x√10cm.

Thus ,x√10=8√10⇒=8.

perimeter =2(3x+x)cm=8xcm=(8×8)cm=64cm

Answer 2

Answer:

64cm.

Step-by-step explanation:

Let the breadth be x cm, then, length = 3x cm .

∴diagonal =√(3x)2+x2cm=x√10cm.

Thus ,x√10

=8√10⇒

=8.

perimeter =2(3x+x)cm

=8xcm

=(8×8)cm

=64cm