Advertisements
Advertisements
प्रश्न
If the ratio of the sides of two cubes are 2 : 3, then ratio of their surface areas will be
पर्याय
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 surface area increase?
What will happen to the volume of a cube, if its edge is trebled?
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.
Find the surface area of a cube whose edge is 3 cm.
Find the cost of sinking a tubewell 280 m deep, having diameter 3 m at the rate of Rs 3.60 per cubic metre. Find also the cost of cementing its inner curved surface at Rs 2.50 per square metre.
The square on the diagonal of a cube has an area of 1875 sq. cm. Calculate:
(i) The side of the cube.
(ii) The total surface area of the cube.
If the total surface area of a cube is 2400 cm2 then, find its lateral surface area
The lateral surface area of a cube of side 12 cm is
The surface area of a cube formed by cutting a cuboid of dimensions 2 × 1 × 1 in 2 equal parts is 2 sq. units.
A cube of side 5 cm is cut into as many 1 cm cubes as possible. What is the ratio of the surface area of the original cube to that of the sum of the surface areas of the smaller cubes?
