Question

ABC IS TRIANGLE , RIGHT-ANGLED AT C.IF AB=25 CM AND =7 CM ,FIND BC•

Answer 1

Answer:

So,

C=90( given)

AB=25cm

AC=7cm

BC=?

What does the Pythagoras theoram says is that = H2=P2+B2

So here, P is the perpendicular that is the height =7cm(given)

And H is the hypotnuese that is the longest side = 25cm

( given)

We have to find the base so we'll use the Pythagoras theoram :

H2=P2+B2

25*25=7*7+B2 (which we have to find)

625=49+B2

625-49=B2

576=B2

B's square will come to LHS and become square root

So, square root of 576 = 14

.

. . The length of the base is 14cm

Thanks a lot!

I hope it helped!

Answer 2

Answer:

BC=24cm

Step-by-step explanation:

according to Pythagoras theorem,

AB^2=BC^2+AC^2

25^2=BC^2+7^2

625=BC^2+49

BC^2=625-49

BC^2=576

BC=√576

BC=24