Advertisements
Advertisements
प्रश्न
A square plate of side 'x' cm is 4 mm thick. If its volume is 1440 cm3; find the value of 'x'.
Advertisements
उत्तर
Volume of the square plate = Volume of a cuboid
h = 4mm
= `(4)/(10)"cm"`
= 0.4cm
Volume of the square plate
= l x b x h
1440 = X x X x 0.4
1440 = x2 x 0.4
x2 = `(1440)/(0.4)` = 3600
x = `sqrt(3600)`
∴ x = 60cm.
APPEARS IN
संबंधित प्रश्न
A tea-packet measures 10 cm × 6 cm × 4 cm. How many such tea-packets can be placed in a cardboard box of dimensions 50 cm × 30 cm × 0.2 m?
A water tank is 3 m long, 2 m broad and 1 m deep. How many litres of water can it hold?
A cuboid has total surface area of 50 m2 and lateral surface area is 30 m2. Find the area of its base.
The external dimensions of a closed wooden box are 48 cm, 36 cm, 30 cm. The box is made of 1.5 cm thick wood. How many bricks of size 6 cm × 3 cm × 0.75 cm can be put in this box?
If two cubes each of side 6 cm are joined face to face, then find the volume of the resulting cuboid.
Three cubes of metal whose edges are in the ratio 3 : 4 : 5 are melted down in to a single cube whose diagonal is 12 `sqrt(3)` cm. Find the edges of three cubes.
If the perimeter of each face of a cube is 32 cm, find its lateral surface area. Note that four faces which meet the base of a cube are called its lateral faces.
If the length of a diagonal of a cube is `8 sqrt(3)` cm, then its surface area is
In a building, there are 24 cylindrical pillars. For each pillar, the radius is 28 m, and the height is 4 m. Find the total cost of painting the curved surface area of the pillars at the rate of ₹ 8 per m2.
If the edge of a cube is 8 cm long, find its total surface area.
