Question

Find the length and diagonal of a rectangle having sides 11cm and 60 cm?

Answer 1

`61cm`

Explanation:

Each diagonal of the rectangle divides the figure into two congruent right triangle, so we can use the Pythagoras' Theorem:
let `a=11cm`, `b=60cm` and `c` be the diagonal:

`c^2 = a^2 + b^2`
`c^2=11^2+60^2`
`c^2=121+3600=3721`
`c=sqrt3721`
`c=61cm`