Question

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Answer 1

Answer:

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Triangle property- sum of all angles in a triangle is 180°

option b is correct

30 + 30 + 120 = 180°

radius= 2.5cm

d= 2radius

d= 2 x 2.5

d= 5 cm

Answer 2

Answer:

Q 16 = (b)

Q 17 = 5.0 cm

Step-by-step explanation:

Q 16 = 30+30+120 = 180 { Using angle sum property we got to know this...}

Q 17 = diameter = 2*radius

= 2*2.5 = 5.0 cm

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