- AC: circle
- BD: square
- CA: triangle
- DB: parallelogram
Step-by-Step Solution
Areas: . The circle is largest.
Answer: A) C: circle
Compute these four areas and pick the one with the LARGEST area: A) triangle base 10 cm, height 8 cm; B) parallelogram base 6 cm, height 6 cm; C) circle radius 7 cm (use π = ); D) square side 9 cm.
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
What is the standard value of π taken as a fraction in textbook problems?Assertion (A): The area of a triangle is half the area of a parallelogram on the same…A square garden has side 25 m. A circular pond of radius 7 m is dug inside it. Find the…In a parallelogram, what is the perpendicular distance between the two parallel sides…Two triangles stand on the same base and between the same pair of parallel lines. What…