Question

A triangle ABC is right-angled at C. If AB = 25m and AC= 15m, then find the length of BC.​

Answer 1

By P.G.T theorem

AB^2=BC^2+AC^2

25^2=BC^2+15^2

625=BC^2+225

625-225=BC^2

400=BC^2

√400=BC

20=BC

Answer 2

Answer:

AB²= 20 m

Step-by-step explanation:

By Pythagorus theorm,

AB² = AC²+BC²

25²m= 15²m+BC²

BC²= 625 - 225

BC²= 400(20×20)

BC²=20m

hope it helps you