Advertisements
Advertisements
प्रश्न
Describe how the two figures at the right are alike and how they are different. Which box has larger lateral surface area?
Advertisements
उत्तर
The first picture is of a cylinder.
Diameter of cylindrical box = 7 cm
Height of cylindrical box (h) = 7 cm
Then radius of cylindrical box (r) = 72 cm
Lateral surface area of cylindrical box = 2πrh
`= 2 × 22/7 × 7/2 × 7`
=154 cm2
And lateral surface area of the cubical box = 4× side2
= 4 × (7)2
= 196 cm2
Hence, it is clear that out of the lateral surface areas of the two, the lateral surface area of the cubical box is greater.
APPEARS IN
संबंधित प्रश्न
Find the volume of a cube whose side is 1.5 dm .
Fill in the blank in the following so as to make the statement true:
The volume of a wooden cuboid of length 10 cm and breadth 8 cm is 4000 cm3. The height of the cuboid is ........ cm.
Fill in the blank in the following so as to make the statement true:
1 cu. km = ........ cu. m
Fill in the blank in the following so as to make the statement true:
1 litre = ........ cu. cm
Fill in the blank in the following so as to make the statement true:
1 ml = ........ cu. cm
The volume of a cube is 729 cm3. Find its total surface area.
A square plate of side 'x' cm is 8 mm thick. If its volume is 2880 cm3; find the value of x.
Three cubes of sides x cm, 8cm and 10cm respectively are melted and formed into a single cube of edge 12cm, Find 'x'.
A cube of side 5 cm is painted on all its faces. If it is sliced into 1 cubic centimetre cubes, how many 1 cubic centimetre cubes will have exactly one of their faces painted?
The areas of any two faces of a cube are equal.
