Question

the length of a rectangle is three times of its width . if the length of diagonal is 8√10 meter, then the perimeter of the rectangle is​

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.

Answer 2

Answer:

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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 = (8×8)cm = 64 cm