SSC CHSL 7 Mar 2018 Shift 1 Paper

Section: English Language

Question : 21 of 100

Marks: +1, -0

The length of the diagonal and the breadth of a rectangle are 25 cm and 7 cm respectively. Find its perimeter (in cm).

Solution:

Let length of rectangle =

l

cm and breadth = 7 cm
Also, diagonal =

d=25

cm
⇒

l^2 = d^2 − b^2

⇒

l =√{ (25)^2 − (7)^2}

⇒

l = √{625 − 49 }= √576

⇒

l=24

cm
∴ Perimeter =

2(l + b)

2×{24+7)=62

Go to Question:

Prev Question

Next Question