In the diagram, O is the centre of the circle, In the diagram, O is the centre of the circle, o and o. Calculate the value of m. A. 30 B. 36 C. 40 D. 72 Correct Answer: Option A Explanation In the diagram above, (alpha) = 2mo (angle at centre = 2 x angle at circumference) (alpha) + 10mo = 360o (angle at circumference) (alpha) + 10mo = 360o(angles round a point) 2mo + 10mo = 360o 12mo = 360o mo = (frac{360^o}{12}) = 30o `, props: [‘comment’], data() { return {} }, methods: {} }) {{ reply.posted_by.display_name }}:   {{ reply.created_at }}

In the diagram, O is the centre of the circle, o and o. Calculate the value of m.
  • A.
    30
  • B.
    36
  • C.
    40
  • D.
    72
Correct Answer: Option A
Explanation

In the diagram above, (alpha) = 2mo (angle at centre = 2 x angle at circumference)
(alpha) + 10mo = 360o (angle at circumference)
(alpha) + 10mo = 360o(angles round a point)
2mo + 10mo = 360o
12mo = 360o
mo = (frac{360^o}{12})
= 30o

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