Selina solutions concise mathematica class 7 icse Solutions for Chapter 18 recognition of solids representing 3 d in 2 d

Q1) Identify the nets which can be used to form cubes

Q4) Using Euler’s formula, find the values of a, b, c and d.

Q5) Dice are cubes with dots or dots on each face. Opposite faces of a die always have a total of seven on them.

Below are given two nets to make dice (cube), the numbers inserted in each square indicate the number of dots in it.

Insert suitable numbers in each blank so that numbers in opposite faces of the die have a total of seven dots.

Q6) The following figures represent nets of some solids. Name the solids

Q7) Draw a map of your class room using proper scale and symbols for different objects.

Q8) Draw a map of your school compound using proper scale and symbols for various features like a playground, main building, garden, etc.

Q9) In the map of India, the distance between the two cities is 13.8 cm.

Taking scale: 1 cm = 12 km, find the actual distance between these two cities.