SURFACE AREA AND VOLUMES

A river 3m deep and 40m wide is flowingat therate of 2km/hr. how much water will fall into the sea in a minute?

Find the length of the longest pole that can be put in a room of dimensions 10m×10m×5m.

A shot-put is a metallic sphere of radius 4.9cm. If the density of the metal is 7.8g/cm³. Find the mass of the shot-put.

The C.S.A of a right circular cylinder of height 14cm is 88cm². Find the diameter of the base of the cylinder.

Find the cost of digging a cuboidal pit 8m long, 6m broad, 3m deep at the rate of Rs 30 per m³.

A sphere, cylinder, and a cone are of the same height and the same radius. Find the ratio of their curved surface areas?

A solid sphere of (R) 3cm is melted and then cast into small balls each of R 0.3cm. Find the no. of balls thus obtained.

A heap of wheat is in the form of a cone whose diameter is 10.5m and height is 3m. Find its volume

A box measure 4cm X 2.5cm X 1.5cm. What will be the volume of a packet contating 12 such boxes?

T.S.A of a solid sphere is 1386 sq.m, then what will be the total surface area of the solid hemisphere of same radius?

The perimeters of ends of a frustum are 48cm & 36cm, if height of frustum be 11cm, find its volume.

A caps. of medicine is in the shape of a sphere of diameter 3.5mm. how much medicine( in mm³) is needed to fill this cap