alleryএকটি পাতলা চোঙাকৃতির খোলকের আয়তন কোনটির সমান?
A2π × inner radius × height × thickness
B2π × mean radius × height × thickness
C4π × mean radius × height × thickness
Dπ × mean radius² × height × thickness
Answer & Solution
Correct answer: B. 2π × mean radius × height × thickness
খোলকটি খুলে ফেললে গড় ব্যাসার্ধের 2 pi গুণ দৈর্ঘ্যের একটি পাতলা স্ল্যাব পাওয়া যায়, যার প্রদত্ত উচ্চতা ও বেধ রয়েছে।
Keep practising Geometry & Mensuration
Browse all Geometry & Mensuration questions for RRB NTPC, or explore more Quantitative Aptitude topics.
Related questions
In three dimensions, what formula gives the volume inside a sphere of radius r?Which algebraic expression calculates the total exterior area bounding a sphere of radius For a circular cylinder of base radius r and height h, which formula gives its volume?Which formula gives the curved side area of a right cylinder with radius r and height h?What geometric solid is generated by rotating a rectangle about one of its sides?What is the longest line segment that can be drawn between two points on a sphere?What metric area corresponds to one million square metres?How many square centimetres are contained in one square metre?