q139. the radius and height of a cylinder are in the ratio 5:7 and its volume is 550 cm cube. Calculate its curved surface area in square cm
(A) 110 (B) 444 (C) 220 (D) 616
@dehati said:q101 if the length of each side of an equilateral triangle is increased by 2 unit, the area is found to be increased by 3+sq root3 square unit. The length of each side of the triangle is(A) sq root 3 (B) 3 unit (C) 3 sq root 3 unit (D) 1+sq root 3 unit
sq.root 3??
@dehati said:q102. The diametere of the moon is assumed to be one forth of the diameter of the earth. Then the ratio of the volume of the earth to that of the moon is(A) 64:1 (B) 1:64 (C) 60:7 (D) 7:60
64:1??
@dehati said:q138 the base of a right circular cone has the same radiusa as that of a sphere. Both the sphere and the cone have the same volume. Height of the cone is(A) 3a (B) 4a (C) 7/4 a (D) 7/3 a
4a??
@dehati said:q139. the radius and height of a cylinder are in the ratio 5:7 and its volume is 550 cm cube. Calculate its curved surface area in square cm(A) 110 (B) 444 (C) 220 (D) 616
220??
meine chsl nhi bhara mein late ho gayi thi.....
q138 for a triangle, base is 6 sq root 3 cm and two base angles are 30 degree and 60 degree. then height of the triangle is
(A) 3 sq root 3 (B) 4.5 cm (C) 4 sq root 3 cm (D) 2 sq root 3 cm
@coolparul007 said:meine chsl nhi bhara mein late ho gayi thi.....
aap agar bharte to top kar jaate
@dehati said:reasoning ke jo qns mai nahi kar paaya :Q91 3 45 2 826 13 ?
80
1 ka square+ 5ka squae=26
@dehati said:(A) 12 (B) 39 (C) 3 (D) 80
@dehati said:Q10.10 11 12105 126 ? (A) 12 (B) 149 (C) 3 (D) 2
10^2 +5=105
11^2+5= 126
12^2 +5=149
option b
@dehati said:Q11.7 23 211 3 ?2 5 7--------------------3 4 3(A) 1 (B) 0 (C) 2 (D) 3
bhai question nahi aa raha samjh mein.
@dehati said:Q12.11/2 , 5/8 , 7/3 , ?(A) 3/27 (B) 2/27 (C) 1/27 (D) 3/9
1/27
not sure
@dehati said:q138 for a triangle, base is 6 sq root 3 cm and two base angles are 30 degree and 60 degree. then height of the triangle is(A) 3 sq root 3 (B) 4.5 cm (C) 4 sq root 3 cm (D) 2 sq root 3 cm
3 sq root 3???
@coolparul007 said:plz explain it........
maine dimensions ko x, 2x and 3x maan liya to surface area ho jaayega 22 x square = 88, to x square = 4, x=2 hoga fir dimensions mil jaayenge 2, 4 and 6 to volume hogi 2x4x6 = 48
@surajpandey said:801 ka square+ 5ka squae=2610^2 +5=10511^2+5= 12612^2 +5=149option bbhai question nahi aa raha samjh mein.1/27not sure
1/27 kaise aaya?
@dehati said:maine dimensions ko x, 2x and 3x maan liya to surface area ho jaayega 22 x square = 88, to x square = 4, x=2 hoga fir dimensions mil jaayenge 2, 4 and 6 to volume hogi 2x4x6 = 48
ok meine bhi aise hi kra tha bs calculation mistake kr di.........
@coolparul007 said:1/27 kaise aaya?
mera bhi logic same hai parul..
mujhe lag raha rahe hai 1st se 2nd aaya and 3rd se 4th aayega.
aur toh koi logic nahi hai..lekin mein sure nahi hu
mujhe lag raha rahe hai 1st se 2nd aaya and 3rd se 4th aayega.
aur toh koi logic nahi hai..lekin mein sure nahi hu