A hollow cylinder is made up of steel. the difference in its outer and inner curved surface area is 132cm2.Height of cylinder is 21 cm and sum of the inner and outer radius is also 21 cm. Find the Total surface of the hollow cylinder (in cm 2 )
We have -2 π h (R-r) = 132 = 2×22/7×21(R-r) =132 R-r = 1 Also given – R + r = 21 Then – R = 11cm, r = 10cm. So, the total surface of the hollow cylinder = 2 π h(R-r) +2 π (R2-r2) =2 π (R +r) [h +R-r] =2×22/7×21(21+1) =6×22×22 =2904cm2
J % M, P * J, M % Q, R * P then find the minimum distance between P and M (approx.)?
Q is 40 meter to the East of R. S is 36 meter to the north of R and 20 meter to the west of T. U is 50 meter to the South of T. U is 20 meter to the We...
Study the following information carefully and answer the given questions:
Point T is 16 m east of point U. Point U is 6 m north of point V and ...
A men starts from home, drives 3 km towards North, takes a left turn and drives for 7 km. He then takes a left turn and drives for 10 km before taking ...
Mr. Manjunath is returning towards his home from an unknown direction and reached at a particular point. He observed his home 150m North. At the same ti...
Point L is in which direction with respect to point O?
In which direction is point N with respect to point L?
if at point O the person starts walking to this west and walks for 9km reaches point A, then what will be the distance between point J and A?<...
Point R is 9 m to the west of point S. Rajeev starts walking from point S towards east. He walks for 4 m and takes a right turn. He further walks for 5 ...
Stayen starts walking towards North. After walking 70m he turns to left and walks 35m straight. He then turns to left and walks 30m , again he turns to...