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Pleaseeeeee help??????????
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12 votes
Pleaseeeeee help??????????

Pleaseeeeee help??????????-example-1
User Numaroth
by
5.4k points

1 Answer

5 votes

Answer:

20 units

Explanation:

there is a theroem when a tangent and secant intersect outside a circle

as per it

CU*DU = GU^2

7.2*DU = 12*12=144

DU = 20 units

User Zistoloen
by
4.6k points
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