alleryদুটি গোলকের ব্যাসার্ধের অনুপাত 1:2। তাদের পৃষ্ঠতলের ক্ষেত্রফলের অনুপাত কত?
A1:6
B1:2
C1:4
D1:8
Answer & Solution
Correct answer: C. 1:4
পৃষ্ঠতলের ক্ষেত্রফল ব্যাসার্ধের বর্গের সমানুপাতিক, তাই অনুপাতটি হলো 1:4।
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?