- A
- B
- C
- D
Step-by-Step Solution
1 m = 100 cm, so . Area . Dividing by 100 instead of 10000 gives the trap — the square unit needs the conversion factor applied TWICE.
Answer: A)
A window pane has an area of . Express this area in square metres.
Class 7Perimeter and AreaPerimeter and Area
Key idea: Parallelogram area
**Area of a parallelogram = base × height.**
Same idea as a rectangle, but the height is the perpendicular distance between the two parallel sides — NOT the slant length of the side. Pick any side as the base, drop a perpendicular to the opposite parallel side, measure that — that's the height.
Example: parallelogram with base 8 cm and perpendicular height 5 cm. Area = . The slant side could be longer; doesn't matter for area.
Perimeter of a parallelogram = 2 × (one side + adjacent side).
Same idea as a rectangle, but the height is the perpendicular distance between the two parallel sides — NOT the slant length of the side. Pick any side as the base, drop a perpendicular to the opposite parallel side, measure that — that's the height.
Example: parallelogram with base 8 cm and perpendicular height 5 cm. Area = . The slant side could be longer; doesn't matter for area.
Perimeter of a parallelogram = 2 × (one side + adjacent side).
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Perimeter and Area practice questions
More Class 7 Perimeter and Area practice
A right-angled triangular window pane has an area of 84 cm². One of the two sides…The wheel of a cycle rickshaw has a diameter of 70 cm. How many complete turns does it…A semicircular flower bed has radius 35 m. Brick edging is laid along its COMPLETE…The perimeter of a rhombus-shaped window pane is 68 cm. How long is each of its sides…A rectangular verandah is 7 m long and 4 m wide. Vitrified tiles are laid over the whole…