Answer:
(a)80 feet
(b)$120,000
Step-by-step explanation:
<u>Part A</u>
<u>Intersecting Secant-Tangent Theorem</u>
If a tangent segment and a secant segment are drawn to a circle from an exterior point, then the square of the measure of the tangent segment is equal to the product of the measures of the secant segment and its external secant segment.
In the attached diagram, the theorem applied is:

Comparing with our diagram:
|AX|=30 feet
|UX|=10 feet
Length of the Bridge,L
Therefore:

900=10(L+10)
L+10=900/10
L+10=90
L=90-10=80 feet
Length of the Bridge=80 feet
<u>Part B</u>
If each foot costs $1500
Cost of the bridge=$1500*80=$120,000
Answer:
4.5 seconds.
Step-by-step explanation:
0.75 of a picture will be taken within a second. 6 times 0.75 is 4.5 seconds.
Hope this helps!
D. You multiply all measurements together. The thickness has nothing to do with how much air will be inside. (: hope this helped ya :)
Answer:
There is 2163 m^2 left
Step-by-step explanation:
