4. The airplane rose 1600 ft. and then went down 400 ft. What is the present altitude of the airplane?

a. -1200 ft.
b. +1300 ft.
c. +1200 ft.
d. -1300 ft.

5. A submarine was situated 1940 meters below sea level. If it ascends 730 meters, what is
its new position?

a +1200 meters
b. +1210 meters
c. -1200 meters
d. -1210 meters​

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

step-by-step explanation:

a and d

the one below it is a function