Luis starts at one corner of a square field and walks 80 feet along one side to another corner of the field. he turns 90° and walks 60 feet, and then walks straight back to where he started.
what is the area of the part of the field he walked around?
a.
140 ft²
b.
280 ft²
c.
320 ft²
d.
2400 ft²

Scott harris can invest $7,000 in a 1-year cd that earns interest at an annual rate of 4 percent compounded monthly. the amount per $1.00 is 1.040742. he can also invest $7,000 in a 1-year cd at annual rate of 4 percent compounded quarterly. the amount per $1.00 is 1.040604. what is the difference in the amount of interest earned for each investment? a) $0.96 b) $0.81 c) $0.87 d) $0.88

True or false look at the picture pls : /

What is the volume of a cone with a height of 6 cm in the radius of 2 cm