936 मीटर
*Q4. अंजू के पास एक समांतर चतुर्भुज के आकार का
कागज का टुकड़ा है जिसकी लंबाई 18 cm और संगत
ऊंचाई/चौडाई 12 cm है। इसका चारों और वह एक
पतली लेस लगाना चाहती है। लेस की आवश्यक लंबाई
ज्ञात कीजिये?Anju hasaparallelogram
shaped piece of paper whose length is 18
cm and the corresponding height / width
is 12 cm. She wants to put a thin lace
around it. Find the required length of the
lace?
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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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