Question

Theorem: Congruent arcs (or equal arcs) of a circle subtend equal angles at the
centre
In the cirde arc EF = arc GH. Find the measure of ZEOF



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Answer 1

Answer:

Congruent arcs or equal arcs of a circle subtend equal angles at the Centre

Congruent arcs (or equal arcs) of a circle subtend equal angles at the centre. In the figure, Arc AB = Arc CD & thus, it is observed that ∠1 =∠2.. Theorem 8: The angle subtended by an arc at the centre is double the angle subtended by it at any point on the remaining part of the circle.

Answer 2

Answer:

Length of rectangular park = 175 m

Breadth of rectangular park = 125 m

Perimeter of park = 2 x (length + breadth)

= 2 x (175 + 125)

= 2 x 300 = 600 m

Since, cost of fencing park per meter = = Rs. 12

Therefore, cost of fencing park of 600 m = 12 x 600 = Rs. 7,200