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

1 Answer
May 12, 2018

#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#