Question

finally, find the volume. triangle area 3 in2 rectangle length 4 in volume ? in3 volume = area of triangle × length of rectangle.

Explanation:

Step1: Identify given values

Area of triangle $A = 3$ in², length of rectangle $l=4$ in

Step2: Apply volume formula

$V = A\times l$
$V=3\times4$

Answer:

$12$ in³