Acone is not a polyhedron. true or false?

The answer is true

Step-by-step explanation:

we know that

A polyhedron is  is a solid with flat faces and a cone is a solid with a curved side

therefore

A cone is not a polyhedron  ( Is true)

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47

the square root of what number? if you add that, then someone will probably answer the question.