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NABTEB Mathematics 2022 Objective — Question 21

Question 21 of 50 from the National Business and Technical Examinations Board (NABTEB) Mathematics 2022 Objective paper, with the correct answer and a full explanation.

In the diagram, angle POQ=150 degrees, and the radius of the circle PSQR is 4.2cm [Take pi=22/7]. Find the length of the minor arc PRQ.

Diagram for question 21

A. 11.00cmCorrect
B. 15.40cm
C. 17.64cm
D. 23.10cm

Explanation

Length of arc = (theta/360) x 2*pi*r = (150/360) x 2 x (22/7) x 4.2 = 11cm.

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