alleryএটা চিলিণ্ডাৰত থকা পানী 30 চে:মি: গভীৰ আৰু ইয়াৰ ব্যাসাৰ্ধ 7 চে:মি:। ইয়াক খালী টেংকলৈ স্থানান্তৰ কৰা হয় যাৰ ভিত্তি 22 × 15 চে.মি. নতুন পানীৰ গভীৰতা বিচাৰি উলিয়াওক। π = 22/7 ব্যৱহাৰ কৰক।
A7 cm
B28 cm
C21 cm
D14 cm
Answer & Solution
Correct answer: D. 14 cm
স্থানান্তৰিত আয়তন (22/7) × 7² × 30 = 4620 cm³, যাৰ ফলত গভীৰতা 4620 ÷ (22 × 15) = 14 চে.মি.
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