Author: Dev Bhardwaj

NCERT Solutions For Class 11 Math Chapter – 1 Exercise – 1.3 1. Make correct statements by filling in the symbols ⊂ or ⊄ in the blank spaces: (i) {2, 3, 4} … {1, 2, 3, Read More

NCERT Solutions For Class 11 Math Chapter – 1 Exercise – 1.1 1. Which of the following are sets? Justify our answer. (i) The collection of all months of a year beginning with the letter J. Read More

NCERT Solutions For Class 9 Math Chapter – 13 Exercise – 13.4   Q1. Find the surface area of a sphere of radius: (i) 10.5 cm  (ii) 5.6 cm    (iii) 14 cm Solution:-   (i)  Read More

NCERT Solutions For Class 9 Math Chapter – 13 Exercise – 13.3   Q1. Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm Find its curved surface Read More

1. A matchbox measures 4 cm×2.5cm×1.5cm. What will be the volume of a packet containing 12 such boxes? Solution: Dimensions of a matchbox (a cuboid) are l×b×h = 4 cm×2.5 cm×1.5 cm respectively Formula to Read More

1. The circumference of the base of cylindrical vessel is 132cm and its height is 25cm. How many litres of water can it hold? (1000 cm3= 1L) (Assume π = 22/7) Solution: Circumference of the Read More

1. Find the volume of the right circular cone with (i) radius 6cm, height 7 cm (ii) radius 3.5 cm, height 12 cm (Assume π = 22/7) Solution: Volume of cone = (1/3) πr2h cube Read More