The radius of track A is 14 m. If the initial separation between Ted and Ned is 22 m, find the circumference of track B.

88 m

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110 m

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124 m

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138 m

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Solution

The correct option is B
110 m

The circumference of track A = 2 $π$ r = 2 $\times$ $(\frac{22}{7})$ $\times$ 14 = 88 m

The circumference of track B = circumference of track A + 22 m = (88 + 22) m = 110 m

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In a race, three people started from A, B and C respectively and stopped at the endpoint. Find out the radius of track B, given that the radius of track A is 14m and distance between B and the end point is 22 m (as given in the figure).

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The radius of track A is 14 m. If the initial separation between Ted and Ned is 22 m, find the circumference of track B.

The correct option is B 110 m The circumference of track A = 2 π r = 2 × (227) × 14 = 88 m The circumference of track B = circumference of track A + 22 m = (88 + 22) m = 110 m

The correct option is B
110 m

The circumference of track A = 2 $π$ r = 2 $\times$ $(\frac{22}{7})$ $\times$ 14 = 88 m

The circumference of track B = circumference of track A + 22 m = (88 + 22) m = 110 m