PERIMETER
PERIMETER IS THE DISTANCE COVERD ALONG THE BOUNDRYOF A POLYGON
PERIMETER OF A SQUARE
A SQUARE HAS 4 SIDES. THEREFOUR, TO FIND ITS PERIMETER MULTIPLY THE SIDE (S)BY 4
P= SIDE + SIDE + SIDE + SIDE
P= 4 X SIDE = 4S
EACH SIDE OF A BOX =50 CM
SO THE PERIMETER IS = 50 CM + 50 CM + 50 CM + 50 CM
= 4X50 CM = 200 CM
PERIMETER OF A RECTRIANGLE
THE OPPOSITE SIDES OF A RECTRIANGLE ARE EQUALE. THEREFORE TO FIND THE FORMULA.
P= LENGHT +BREADTH + LENGHT + BREADTH
P= 2 X LENGHT + 2 X BREADTH
= 2 (L+B)
THE LENGHT OF THE RECTANGLE
THE BREADTH OF THE RECTANGLE
SO THE PERIMETER = 2 (6CM + 2CM)
= 2 (8CM)
= 16 CM
ความคิดเห็น