`stackrel(harr)(dg)` and `stackrel(harr)(eg)` are tangent to circle c and circle f. the points of tangency are a, b, d, and e. if m`/_dfe` = 140°, what is m`/_acb`?

General Idea:

Sum of angles subtended at the centre and point of contact by tangents down from an external point is supplementary (180°).

Applying the concept:

Considering the point of contact of two tangents of large circle, we can write

We are given , so the equation will become

{Subtracting 140 on both sides}

Considering the point of contact of two tangents of small circle, we can write

Subtracting 40 on both sides, we get...

Conclusion:

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540

answ5

step-by-step explanation:

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