Question

The width of a rectangle is 5 cm and its diagonal is 13 cm.
What is its perimeter?​

Answer 1

Diagonal,d =13cm

Width,b=5cm

By Pythagoras theorem, we have

l=√(13²-5²)

l=√(169-25)

l=√(144)

l=12

Perimeter,p = 2(l+b)

p=2(12+5)

p=2(17)

p=34