Question

In Fig. each square is of unit length
(a) What is the perimeter of the rectangle $ABCD$?
(b) What is the area of the rectangle $ABCD$?
(c) Divide this rectangle into ten parts of the equal area by shading squares.
(Two parts of equal area are shown here)
(d) Find the perimeter of each part which you have divided. Are they all equal?

Answer 1

Given that each square is of unit length, length of the shape $ABCD$ is $10units$ and breadth is $6units$
(a) Perimeter of $ABCD\Rightarrow 2\times (length+breadth)$
$=2\times (10+6)units=2\times 16units=32units$
(b) Area of rectangle $ABCD=length\times breadth$
$\Rightarrow (10\times 6)uni{t}^2=60unit{s}^2$
(c) The figure show the part of the rectangle of the equal area by shading squares are $E,F,G,H,I,J,K,L,M$ and $N$.
(d) Each part contains $6$ square. So, perimeter of the each part is $12units$ and a perimeter of each part is equal.