Maths question? Someone please help

Probably the easiest question ever but I don't understand. Help please x

"A rectangular shelf is supported by brackets, each bracket is a right angled triangle. 48cm, 25cm. Calculate the width of this bracket. Give your answer correct to one decimal place." Help please

a right angled triangle with hypotenuse =48cm, 1 side = 25cm , width = x
Use the Pythagorean to solve for x (and it's easy to do!)