The y-intercept of the line whose equation is x - y = -1 is

What is the total surface area of this square pyramid?

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9

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)