Question

find the length of the diagonal of a rectangle whose length is 15 cm and breadth is 8 cm

Answer 1

it is solve by the pythagoras theoram...like..this..dear....
l=15cm. b=8cm....now apply theoram...:
=root over of....15^2+8^2
=225+64
=root over of 289...
=17..cm..is the ans...

Answer 2

since diagonal of rectangle act as a hypotenuse of right angled triangle

thus
h^2 = p^2 + b^2
= 15^2 + 8^2
= 225 + 64
=289
h =
$\sqrt{289 } \\ = 17$
hence length of required diagonal is 17 cm