Chapter – 11: Constructions
Exercise 11.1 In each of the following, give the justification of the construction also: 1. Draw a line segment of length 7.6 cm and divide it in the ratio 5 : 8. Measure the two parts. Construction…
Chapter – 12: Area Related to Circles
Exercise: 12.1 1. The radii of two circles are 19 cm and 9 cm respectively. Find the radius of the circle which has a circumference equal to the sum of the circumferences of the two circles. Solution:…
Chapter – 13: Surface Areas and Volumes
Exercise: 13.1 1. 2 cubes each of volume 64 cm3 are joined end to end. Find the surface area of the resulting cuboid. Solution: The diagram is given as: Given, The Volume (V) of each cube is =…
Chapter -14: Statistics
Exercise 14.1 1. A survey was conducted by a group of students as a part of their environment awareness program, in which they collected the following data regarding the number of plants in 20 houses in a…
Chapter – 15: Probability
Exercise: 15.1 1. Complete the following statements: (i) Probability of an event E + Probability of the event ‘not E’ = ___________. (ii) The probability of an event that cannot happen is __________. Such an event is…
