Question: A metal plate is made from two circles. One circle is of radius 7 cm. The other circle is of radius 5 cm. Their centres

A metal plate is made from two circles. One circle is of radius 7 cm. The other circle is of radius 5 cm. Their centres C1, and C2, are 9 cm apart.

a) Find, in radians, angles AC1B and AC2B.

b) Find the area of the metal plate.

c) Find the perimeter of the metal plate.

C 7 cm 9 cm A B 5 cm C

C 7 cm 9 cm A B 5 cm C

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ANSWER a To find the angles AC1B and AC2B we can use the cosine rule AC1B cosAC AB CB 2 x AC x AB AC... View full answer

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