I do not understand this problem. Can I please get some help?

Explanation:

CD and BC are radii of the same circle. We are shown BC = 9, so CD is also 9

Through the segment addition postulate, we know that,

AC = AD + DC

AC = 6 + 9

AC = 15

The angle ABC is 90 degrees as this is a tangent point at the circle.

Triangle ABC is a right triangle. The leg AB is unknown, which we'll call x. The other leg is BC = 9. The hypotenuse is AC = 15

Use the pythagorean theorem to solve for x

a^2+b^2 = c^2

x^2+9^2 = 15^2

x^2+81 = 225

x^2 = 225-81 ... subtracting 81 from both sides

x^2 = 144

x = sqrt(144)  ... applying square root to both sides

x = 12

AB = 12

answer:

1.14285714286

step-by-step explanation:

divide 40 into 35 and you will get your answer

363 square inches

step-by-step explanation:

surface area of a pyramid is b + 1/2ph

b is the area of the base: 11 x 11 = 121

p is the perimeter of the base: 11 + 11 + 11 + 11 = 44

h is the height of the pyramid: 11

121 + 1/2(44)(11)

121 + 242

363