X = 35, because the angles on top and bottom are equal, so its 60 - 25=35
A would be the correct answer.
The numbers 3,4,5 are a Pythagorean Triple. This means they can be put in the form a^2 + b^2 = c^ where a=3, b=4 and c=5.
(8 x k) - 6
its like that because 8 and k are the product
then minus 6
V = L x W x H
V = 5 x 2 x 3
V = 30 ft
ANSWER: you need 30ft of sand to fill the box