Question

if perpendicular 15 CM hypotenuse 13 cm then find base​

Answer 1

Using pythagoras theorem
Hypotenuse ^2 = Perpendicular ^2 + Base^2
And hypotenuse is always the longest side of remaining 2 sides.

But according to your question, triangle is not possible as hypotenuse can never be smaller than perpendicular.

Hope u understand

Answer 2

In this question hypotenuse should be 15 cm and perpendicular should be 13cm coz hypotenuse is the longest side

(H)² = (P)² + (B)²

(15)² = (13)² + (B)²

225 = 169 + (B)²

225 - 169 = (B)²

56 = (B)²

√56 = B

B = 7.48331