Answer:
9x5x10 = 450
Step-by-step explanation:
9x5 = 45
45x10 = 450
Answer:
x=40
Step-by-step explanation:
4x-20+x=180
5x-20=180
5x=200
x=200/5
x=40
Answer:
8 hours
Step-by-step explanation:
$1,300/$32.50 = 40
$1,040/$32.50 = 32
40-32=8
This is a rectangle plus a semicircle. We're only asked for the area of the semicircle; if they were better question writers they would have included an answer that's the area of the entire shape. Amateurs.
The semicircle has a diameter of 3 feet, so a radius of 1.5 feet and an area of

First choice. The half in the formula comes from the fact we want the area of a <em>semi</em>circle.