1.

1). 85 cm2). 80 cm3). 84 cm4). 75 cm

Answer»

Let the radius of the WHEEL be ‘r’.

DISTANCE covered by the wheel in one revolution = 13.2/5000 km = (13200 × 100)/5000 CM = 1320/5cm = 264 cm (? 1 km = 1000 m = 1000 × 100 cm)

⇒ Circumference of the wheel = 264 cm

⇒ 2πr = 264

⇒ r = 264/2π = 264/(2 × 22/7) = 42 cm

∴ Diameter of the wheel = 2R = 2 × 42 = 84 cm



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