Question

Find the length of diagonal AC of a rectangle whose sides are AB=15cm and BC=8cm​

Answer 1

Step-by-step explanation:

In rectangle ABCD,

AB=15cm

BC=8cm

Diagonal AC=?

Now,in right triangle ABC,

By Pythagoras theorem,

AC sq = AB sq+BC sq

AC sq = 15 sq+8sq

AC sq =225+64

AC sq=289

AC =√289

=17cm

Therefore,diagonal AC =17cm.

Answer 2

Answer:

17 cm is the length of diagonal AC

Step-by-step explanation:

using pythagoras theorem:

(AB)² + (BC)² =(AC)²

(15)² + (8)² =(AC)²

225+64 = (AC)²

289 =(AC)²

AC= root (289)

AC= 17