Скачать или смотреть Ex 13.4 Q 1 Chapter 13 surface areas and volumes

Ex 13.4 Q 1 Chapter 13 surface areas and volumes #class10maths #area #cbse #ncert #video #volume

Class 10 Maths
Chapter 13 Surface Areas And Volumes Exercise 13.4 Question 1
#ex13.4q1
NCERT solutions Cbse Board
class10th mathematics

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class 10 maths exercise 13.4 question 1
class 10 maths exercise 13.4 question 2
class 10 maths exercise 13.4 question 3
class 10 maths exercise 13.4 question 4
class 10 maths exercise 13.4 question 5


1. A drinking glass is in the shape of a frustum of a
cone of height 14 cm. The diameters of its two
circular ends are 4 cm and 2 cm. Find the capacity of
the glass.

2. The slant height of a frustum of a cone is 4 cm and
the perimeters (circumference) of its circular ends
are 18 cm and 6 cm. Find the curved surface area of
the frustum.

3. A fez, the cap used by the Turks, is shaped like the
frustum of a cone (see Fig. 13.24). If its radius on the
open side is 10 cm, radius at the upper base is 4 cm
and its slant height is 15 cm, find the area of material
used for making it.

4. A container, opened from the top and made up of a metal sheet, is in the form of a
frustum of a cone of height 16 cm with radii of its lower and upper ends as 8 cm and 20
cm, respectively. Find the cost of the milk which can completely fill the container, at the
rate of Rs. 20 per litre. Also find the cost of metal sheet used to make the container, if it
costs Rs. 8 per 100 cm2
. (Take π = 3.14)

5. A metallic right circular cone 20 cm high and whose vertical angle is 60° is cut into two
parts at the middle of its height by a plane parallel to its base. If the frustum so obtained
be drawn into a wire of diameter 1/16
cm, find the length of the wire.

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