Question

A right angle has a leg of 12 cm and a hypotenuse of 19 cm. What is the length of the other leg?

A. 7.0
B. 14.7
C. 22.5
D. 217.0

Answer 1

h^2 = x^2 + y^2

where h is the hypotenuse, x and y are the legs.
h = 19cm
x = 12cm.
y = ?


h^2 = x^2 + y^2
y^2 = h^2 - x^2
y^2 = 19^2 - 12^2
y^2 = 361 - 144
y^2 = 217
y = sqrt(217)
y = 14.7


Letter B