Question

1. Two planes intersect at _____
2. What is the midpoint of coordinates 10 and -4?
3. What is the perimeter of a rectangle with width 6 inches and length 8 inches?
4. What is the area of a circle with a diameter of 16 ft. ? Use 3.14 for (pi) .

Answer 1

1 is easy, just think of a coordinate plane. Where do the two axes connect, and what technically is that thing called?
2 Is vague, because to find the midpoint, you need two points, which 10 and -4 do not qualify as
3 To find the Perimeter, use the formula P=2w+2l
4 The area of a circles is (pi)r^2.
16=3.14r^2
16/3.14=r^2
Find the square root of sixteen divided by pi, and you'll have your radius