SAT Question 468613c0: Area and Volume answer and explanation with Desmos solution

Choice C is correct. The area, $A$, of a triangle is given by the formula $A=\frac{1}{2}bh$, where $b$ is the base length and $h$ is the height of the triangle. It's given that a triangle has a base length of $56$ centimeters and a height of $112$ centimeters. Substituting $56$ for $b$ and $112$ for $h$ in the formula $A=\frac{1}{2}bh$ yields $A=(\frac{1}{2})(56)(112)$, or $A=3,136$. Therefore, the area, in square centimeters, of the triangle is $3,136$.