The width of a human hair is $2\ \times\ 10^{-5}$ meters. The width of a piece of sand is $1.5\ \times\ 10^{-4}$ meters.

If lmn=xyz, which congruences are true by cpctc? check all that apply

What is the equation of the graph below? y=sec(x)-4

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)