A Riemann sum approximates the area of a certain region. Usually it's used in calculus, where you use the Riemann sum to approximate the area a curve instead of using an integral to find the exact value, since that tends to take a lot more time and effort.
Using x for width (x/2)-4=18. completely solved x=44
Answer:
the answer is 32
Step-by-step explanation:
3/8=0.375
0.375 x 12 =32
