Ncert Solutions For Class 6 Maths Ex 11.1

Ncert Solutions For Class 6 Maths Chapter 11 Ex 11.1

Question 1

Let the side of an equilateral triangle be m. Show the perimeter of the triangle with the help of m.

Answer

Perimeter = sum of three sides

= m+m+m

= 3m

 

Question 2

Let the side of a regular hexagon be denoted by m. Show the perimeter of the hexagon with the help of m.

(All sides are equal in regular hexagon)

1

Answer

Side of regular hexagon = m

Perimeter = sum of all sides

= 6m

 

Question 3

In the given figure a cube, 3 – D cube is shown. It has six identical squares as all the sides are equal so same six faces. Let the length of a side of cube be given by m. Find formula for total length of the cube.

2

Answer

Length of an edge = m

Number of edges = 12

Total length of the edges = total number of edges × Length of each edge

= 12m

 

Question 4

Diameter of a circle is a line which passes through the centre and joins two points of circle. (In the given figure XY is a diameter of circle; c is centre.) Express the diameter of the circle (d) in form of its radius(r).

3

Answer

d = twice the radius

= 2r