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The disc brake in a car is a flat metal ring. 22 cm in diameter, with a 6 cm diameter hole in the middle. Calculate the area of the metal. ​

Répondre :

352cm ²

Step-by-step explanation:

disc brake is a ring .

formula for area of ring

π(ro squared - risquared

where ro is outside radius and ri is inside radius

area = 353cm²