Elena is making circular birthday invitations for her friends. The radius of the circle is 7.5 cm. She purchased 500 cm of ribbon to glue around the edge of each invitation. Would she have enough ribbon to make 10 invitations? If so, how much ribbon would be left over? If not, how much more ribbon would she need? Round answers to the nearest hundredth.

9

step-by-step explanation:

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it

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step-by-step explanation: