@gudda1122 said: a and b together can complete a piece of work in 12 days and b and c together in 15 days . If a is twice as good a workman as c , then in how many days will b alone complete the same work?
a-30 days b-20 days c-60 days
@gudda1122 said: a and b together can complete a piece of work in 12 days and b and c together in 15 days . If a is twice as good a workman as c , then in how many days will b alone complete the same work?
20 days
@sandeepv882 said: the height of right circular cone is 9cm n radius of circular base is 3cm. The cone is cut by a plane parallel to its base so as it divide it into two parts . The volume of frustum(lower part) of cone is 44 cubic cm. the radius of the upper circular surface of frustum ?
bhai ye tire 2 ka last year ka q hai aur bahut lamba hai
I doubt ki xam me agar iski figures aur thoda sa type change kr de to without mistake ho paaye.....
@sandeepv882 said: the height of right circular cone is 9cm n radius of circular base is 3cm. The cone is cut by a plane parallel to its base so as it divide it into two parts . The volume of frustum(lower part) of cone is 44 cubic cm. the radius of the upper circular surface of frustum ?
using similar triangles h/9=r/3( h and r are dimen of small cone )
h=3r
vol of frustum= (1/3 pi *3^2 *9) - 1/3 pi* r^2* 3r = 44
27pi-r^3 pi=44
r^3 pi=22
r = cube rt 7
@watsnew24 said:bhai ye tire 2 ka last year ka q hai aur bahut lamba haiI doubt ki xam me agar iski figures aur thoda sa type change kr de to without mistake ho paaye.....
ha bhai kafi lamba hai tabhi nhi kar rha.....
@VENRAG said:using similar triangles h/9=r/3( h and r are dimen of small cone )h=3rvol of frustum= (1/3 pi *3^2 *9) - 1/3 pi* r^2* 3r = 4427pi-r^3 pi=44r^3 pi=22r = cube rt 7
bhai answer given cube rt13
the area of a circle whose radius is 8 cm is trisected by two concentric circles the ratio of radii of the concentric circles in ascending order is
@gudda1122 said: A semi circular sheeet of metal of diamtr 28cm is bent into an open conical cup.The depth of d cup is approx-11 12 13
12 approx
Q.A motorboat travelling at some speed can cover 25km in 8hrs.At same speed it covers 35km upstream and 52km downstream in 11hrs.The speed of stream is (in km/hr)
a.2 b.3 c.4 d.5 ??
answr wid method plzz
@anurag1701 said: Q.A motorboat travelling at some speed can cover 25km in 8hrs.At same speed it covers 35km upstream and 52km downstream in 11hrs.The speed of stream is (in km/hr)a.2 b.3 c.4 d.5 ??answr wid method plzz
bhai samjh nhi aya q
25km upsream or dwnstream
11 hr total for upstream+dwnstream ya alag alag
@anurag1701 said: Q.A motorboat travelling at some speed can cover 25km in 8hrs.At same speed it covers 35km upstream and 52km downstream in 11hrs.The speed of stream is (in km/hr)a.2 b.3 c.4 d.5 ??answr wid method plzz
speed =25/8 kmph
35/(25/8-x) + 52/(25/8+x) =11
solve fr x
bhai log answers nahi h un questions k
but i hink aap logo ne sahi solve kiye honge
but still agar kisi question mein kuch locha hai toh bata do
yaar woh light chali gayi thi yahan par
@VENRAG said:kya told bhai...mistake kaha tha
bhai perfect method
but ans cubert13 hai.....
its hard calci
but ans cubert13 hai.....
its hard calci