Answer:
13200cm^3
Step-by-step explanation:
find the side length of the legs of the E
30-10=20
L*W*H
20*12*10=2400
do that 3 times and add them together.
7200
do the long side of the E next
10*60*10=6000
add all your answers together
13200
add your units
13200cm^3
