On a squared paper, draw (i) a rectangle, (ii) a triangle (iii) any irregular closed figure. Find the approximate area of each by counting the number of squares complete, more than half and exactly half.

The boundary line of an irregular lamina, on a graph paper is shown in Fig. Find the approximate area of the lamina. In Fig. , the number of complete squares = 14 The number of squares more than half = 11

Find the area of each of the figures drawn on the unit square grid paper given below :

In a squared sheet, draw two triangles of equal areas such that(i) the triangles are congruent.(ii) the triangles are not congruent.What can you say about their perimeters?

(i) Find the number of reatangles of any size in a chess board (ii) Find the number of squares of any size in a rectangle of size 8xx 5 .

A uniform conducting wire of length 12a and resistance R is wound up as a current carrying coil in the shape of (i) an equilateral triangle of side a, (ii) a square of sides a and, (iii) a regular hexagon of sides a. The coil is connected to a voltage source V_0 . Find the magnetic moment of the coils in each case.

Area of a square is same as that of a rectangle. The length and the breadth of the rectangle are respectively 5 cm more and 4 cm less than the side of the square. Find the side of the square.

The length of a rectangle is twice the side of a square and its width is 6 cm greater than the side of the square. If area of the rectangle is three times the area of the square, find the dimensions of each.

Without drawing a diagram, find (i)10th square number (ii) 6th triangular number

ABCD is a square with sides 12 cm each. Find its perimeter and area. Cut off a rectangle measuring C 8cm 2 cm by 4 cm from a corner as shown in the figure. Find the perimeter and area of the new polygon thus formed.