## NCERT Solutions for Class 4 Maths Chapter 8 - Carts And Wheels

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1. What are some of the common round things as per Chapter 8 of Class 4 Maths?

Chapter 8 Class 4 Mathematics is about Carts and Wheels. In this chapter, fundamental concepts on geometrical shapes and sizes, especially circles have been discussed. The circle is a geometrical shape. You must have seen many round things. These can be easily seen in our day to day activities. Some of the common round things that can be observed in daily life are plate, wheel, ball, moon, sun, bowl, coins, some utensils like Tawa, Kadai, and more.

2. What is a radius in a circle?

The circle is a unique geometrical shape. In higher standards, the circle is taught in terms of the perimeter, area, etc. In Chapter 8 of Mathematics Class 4, fundamental concepts of the circle are taught. The meaning of diameter and radius are some of those concepts included in the chapter. Diameter is the longest line that connects one point of the circle to another through the centre of the circle. The half-length of this diameter is referred to as the radius, which is the distance from the centre of the circle to one end of the circle. An easy way of calculating the radius is by dividing the length of diameter by 2.