दो रेलगाड़ी समान दिशा में कर्म से 30 किलोमीटर प्रति घंटा और 58 किलोमीटर प्रति घंटा की चाल से चल रही है धीमी गति से चल रही ट्रेन में बैठे व्यक्ति को 18 सेकंड में पार करती हैं तो रेल की लंबाई क्या होगी
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It is given that two circle having radii 5.5 cm and 4.2 cm touch each other externally. We know, the distance between the centres of the circles touching externally is equal to the sum of their radii. Thus, the distance between their centres is 9.7 cm.
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Answer:
It is given that two circle having radii 5.5 cm and 4.2 cm touch each other externally. We know, the distance between the centres of the circles touching externally is equal to the sum of their radii. Thus, the distance between their centres is 9.7 cm.
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