What is the arc of RC and CBR ?

Given:

m∠CDR = 85°

To find:

The length of arc RC and arc CBR.

Solution:

The measure of the central angle is congruent to the measure of the intercepted arc.

⇒ m∠CDR = m(ar RC)

⇒ m(ar RC) = 85°

Complete angle of circle = 360°

⇒ m(ar RC) + m(ar CBR) = 360°

⇒ 85° + m(ar CBR) = 360°

Subtract 85° from both sides.

⇒ 85° + m(ar CBR) - 85° = 360° - 85°

⇒ m(ar CBR) = 275°

The measure of arc RC is 85°.

The measure of arc CBR is 275°.

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step-by-step explanation:

i found my answer by dividing the cost of each bag by their respective weights.

14.88 divided by 2 = 7.44

17.29 divided by 3 = 5.77

18.4 divided by 4 = 4.6

24.4 divided by 5 = 4.88

by this, i found that the 4 kilo bag is the best buy.

i can't see the picture : /