`127 2/7` sq.cm of sheet is required to make a hemispherical bowl. Calculate the length of diameter of the forepart of the bowl.

Three spheres made of copper having the lengths of 6cm, 8 cm and 10 cm diameters are melted and a large sphere is made. Calculate the length of diameter of a large sphere.

A toy is made in the form of hemisphere sumounted by a right cone whose circular base is joined with the plane surface of the hemisphere . The radius of the base of the cone is 7 cm and its volume is 3/2 of the hemisphere . Calculate the height of the cone and the surface area of the toy correct to 2 places of decimal (Take pi= 3 1/7 )

77 sq-cm tripal is required to make a right circular conical tent. If the slant height of the tent is 7m, then calculate the base area of the tent.

The length of diameter of base of a hemispherical tomb is 42 dcm. Calculate the cost of colouring the upper surface of the tomb at the rate of ₹ 35 per square metre.

77 sq m tripal is required to make a right circular conical tent. If the slant height of the tant is 7 m then what is the area of the base of the tent?

O is the centre of a circle. An external point P is 26 cm away from the centre of the circle and the length of the tangent (PT) drawn from the point P to the circle at T is 10 cm. Calculate the length of the diameter of the circle.

How many litres of milk can a hemispherical bowl of diameter 10.5 cm . Hold ?

If the cost of making a leather ball is Rs.431.20 at the rate of Rs.17.50 per square cm. Calculate the length of diameter of the ball.

The whole surface area of a solid hemisphere with length of 7 cm radius is