Question

A cement block is an isosceles right triangle with a 45” hypotenuse. A square hole has a 6” side. What is the probability of a marble rolling into the hole in the cement block?











14.7%










5.6%










11.2%










7.1%

@dayani.laforest

@mathmate

@iGreen

Answer 1

Assuming the square hole is on the surface of the block and the marble is rolling on the block.
However, "rolling" depends on the initial position and velocity, flatness slope of the block. The question is insoluble without additional information.
The intended question would probably be "if an infinitely small marble is thrown randomly onto the block, what is the probability of the marble hitting the hole?"
It would involve calculating the area of the hole relative to the area of the block.

Answer 2

well what's the best answer?

Answer 3

@iGreen

Answer 4

@hba
@Joel_the_boss

Answer 5

We're still missing the dimensions of the triangular cement block. We know the size of the square hole (6"x6"). So cannot fix a numerical answer.
When you find the size of the triangular block, then divide the area of the hole by the area of the triangular block, you would get to choose the correct answer.