Advertisements
Advertisements
प्रश्न
If the ratio of the sides of two cubes are 2 : 3, then ratio of their surface areas will be
विकल्प
4 : 6
4 : 9
6 : 9
16 : 36
Advertisements
उत्तर
4 : 9
Explanation;
Hint:
Ratio of the surface area of cubes = 4a12 : 4a22
= a12 : a22
= 42 : 92
= 4 : 9
APPEARS IN
संबंधित प्रश्न
If each edge of a cube is doubled, how many times will its volume increase?
The dimensions of a metal block are 2.25 m by 1.5 m by 27 cm. It is melted and recast into cubes, each of the side 45 cm. How many cubes are formed?
Fill in the blank in the following so as to make the statement true:
1 litre = ....... cubic decimetre
Fill in the blank in the following so as to make the statement true:
1 kl = ....... m3
Fill in the blank in the following so as to make the statement true:
1 cu. km = ........ cu. m
Find the surface area of a cube whose volume is 216 dm3.
Cubes A, B, C having edges 18 cm, 24 cm and 30 cm respectively are melted and moulded into a new cube D. Find the edge of the bigger cube D.
Three equal cubes are placed adjacently in a row. Find the ratio of the total surfaced area of the resulting cuboid to that of the sum of the total surface areas of the three cubes.
The length, breadth, and height of a cuboid are in the ratio 6: 5 : 3. If its total surface area is 504 cm2, find its volume.
The surface area of a cube formed by cutting a cuboid of dimensions 2 × 1 × 1 in 2 equal parts is 2 sq. units.
