Mathematics
Fill in the blanks:
(i) The perimeter of a closed plane figure is the length of its …..
(ii) The unit of measurement of perimeter is same as that of …..
(iii) If the side of a rhombus is 7 cm then its perimeter is …..
(iv) The area of a closed plane figure is measured in ……
Answer
(i) The perimeter of a closed plane figure is the length of its boundary.
(ii) The unit of measurement of perimeter is same as that of length.
(iii) Since a rhombus has 4 equal sides, perimeter = 4 × side = 4 × 7 = 28 cm.
If the side of a rhombus is 7 cm then its perimeter is 28 cm.
(iv) The area of a closed plane figure is measured in square units (sq. units).
Related Questions
A rectangle has same area as that of a square of side 10 m. If the breadth of the rectangle is 8 m, find the perimeter of the rectangle.
Split the following shapes into rectangles and find their areas. (The measures are given in centimetres):
State whether the following statements are true (T) or false (F):
(i) Centimetre is the unit of area.
(ii) The sum of lengths of a polygon is called its area.
(iii) If the side of a square is doubled, then its perimeter is also doubled.
(iv) If the side of a square is doubled, then its area is also doubled.
(v) To find the cost of constructing a road, we find its area.
(vi) To find the cost of fencing a field, we find its perimeter.
If the perimeter of a square is 50 cm, then its side is
200 cm
150 cm
25 cm
12.5 cm