Mathematics Question For RRB, Railway Group D, Rajasthan SI 26-07-2018

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Question(1) The volume of a solid hemisphere is numerically equal to its total surface area.  it Is radius?

 एक ठोस गोलार्द्ध का आयतन संख्यात्मक रूप से उसके कुल पृष्ठीय क्षेत्रफल के बराबर है | उसकी त्रिज्या हैं ?

(A) 8/5

(B) 9/2



Question(2)The height and radius of a hemisphere and perpendicular cylinder are equal, then there is a ratio of the hemisphere and volume of the cylinder?

 यदि किसी गोलार्द्ध तथा लंब वृत्तीय बेलन की ऊँचाई तथा त्रिज्या क्रमशः बराबर है तो गोलार्द्ध तथा बेलन के आयतन का अनुपात है ?

(A) 2:8

(B) 3:5


(D) 2:3

Question(3) The sides of a rectangular box are in the ratio 1: 2: 3 and its dorsal area is 88 cm ^ 2. According to the volume of that box accordingly?

 एक आयताकार बक्से की भुजाएं 1:2:3 के अनुपात में है और उसका पृष्ठीय क्षेत्रफल 88 सेमी^2 है | तदनुसार उस बक्से का आयतन कितना है ?

(A) 48 सेमी^3

(B) 52 सेमी^3

(C) 45सेमी^3


Question(4) The diameter of the inner and bha pages of a hollow circular shell is 6 cm and 10 cm respectively. If this shell is melted and a solid cylinder of 8/3 cm length is made, then what is the diameter of that cylinder?

 एक खोखले गोलाकार खोल के आंतरिक तथा बा्हा पृष्ठों के व्यास क्रमशः 6 सेमी तथा 10 सेमी है | यदि इस खोल को पिघलाकर 8/3 सेमी लम्बाई वाला एक ठोस बेलन बना दिया जाए तो उस बेलन का व्यास कितना होगा ?

(A) 13 सेमी

(B) 12 सेमी

(C) 14 सेमी

(D) 11 सेमी

Question(5) A toy is in the form of a cone attached to a hemisphere. A radius of a hemisphere and cone 3 cm And the height of the cone is 4 cm. Total page area of the toy?

एक खिलौना किसी गोलार्द्ध पर आरोपित शंकु के रूप में है | गोलार्ध्द और शंकु की त्रिज्या 3 सेमी. है और शंकु की ऊँचाई 4 सेमी है | खिलौने का कुल पृष्ठ क्षेत्रफल है ?

(A)88.55 सेमी

(B) 75.43 सेमी

(C)77.21 सेमी

(D)73.79 सेमी

All Solutions (1-5):






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