3 years ago

Find the area of this sector. 19cm length on side 118degree angle in centre

Mathematics

1 answer:

aleksklad [387]3 years ago

8 0

Answer:

87.68 cm²

Step-by-step explanation:

<u>Arc length:</u>

118*2πr/360 = 19 cm
118*3.14r/180 = 19
r = 19*180/118*3.14
r = 9.23 cm

<u>Area of sector:</u>

A = πr²*118/360
A = 3.14*9.23²*118/360
A = 87.68 cm²

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