A manufacturer reduces the diameter of their spherical bearing balls by 50% to cut costs. What is the percentage decrease in volume of each ball?
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Correct answer: A
Explanation
दिया गया :
व्यास में कमी = 50%
सूत्रानुसार :
गोले का आयतन = (व्यास)³
नया व्यास = 50% = 1/2
नया आयतन = (1/2)³
नया आयतन = 1/8
कमी = 1 − 1/8
कमी = 7/8
प्रतिशत कमी = (7/8) × 100 = 87.5%
आयतन में कमी = 87.5%