Math, asked by maxningthouja, 11 months ago

the minute hand of a wall clock is 4.2cm long. find the area swept by its in 20 minute​

Answers

Answered by sanyam75
5

Answer:

angle made in 20 min = 120 degree

area swept = (120 * 22 * 42 * 42)÷(360 * 7 * 10 * 10)

= 18.48 cm sq.

Answered by Rishidas
0

Answer:18.46cm^2

Step-by-step explanation:

Angle made by minute hand is 20/60×360°=120°

Area = π(4.2)^2÷360°×120°=18.46cm^2

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