John is filling the empty right triangular prism container shown below with a lightweight concrete to set the horse watering buc
ket on in the barn so it's not muddy all the time. The concrete weights 3 pounds per cubic foot. How much will the mold weigh when it's completely filled with concrete? (image shows leg A is 4 feet tall and angle c is 36.87 the triangle is a right triangle)
where "a" is the length of one of the sides.
= 1350
