Question

The breadth of the rectangle is 111 cm and its diagonal is 185 cm. Find the perimeter.(in cm)

Answer 1

Given :- ABCD is a rectangle.

breadth = 111cm and diagonal = 185 cm

Construction :- join diagonal

Solution :- in triangle ABD

According to pythagoras theorem

H2=P2 + B2

34225=12321 + B2

34225 - 12321 = B2

21904=B2

148=B

Length = 148cm

Now,

Perimeter of rectangle

P=2(l+b)

P=2(111+148)

P=518cm