Question

1.Two cubes of edge 6 cm are joined to form a cuboid. Find the total surface area of the cuboid
2. Calculate the edge of the cube if its volume is 1331 cm3
3 If in a cylinder, radius is doubled and height is halved, then find its curved surface area.
4. The radii of two cylinders of the same height are in the ratio 4 :5, then find the ratio of their volumes.
5.Find the area of the sheet required to make closed cylindrical vessel of height 1 m and diameter 140 cm.
this homework is hard

Answer 1

Answer:

1.360sq.cm

2.Edge of cube =11cm

3.curved surface area remains same

4.16:25

5.7.48sq.m