Question

Find the perimeter of a rectangle whose length is 4cm and diagonal is 5cm?

Answer 1

Answer:

18 cm

Step-by-step explanation:

Length = 4 cm

Diagonal = 5 cm

Breadth = √diagonal² - length²

              = √5² - 4²

              = √25 - 16

              = 3cm

Perimeter = 2 (l + b)

                 = 2 (4 + 5)

                 = 2 * 9

                  = 18 cm

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