- A34
- B13.6
- C289
- D17
Step-by-Step Solution
All four sides of a rhombus are equal, so side = 68 ÷ 4 = 17 cm. Dividing by 2 (as you would for a rectangle to get length + breadth) gives the trap 34; 289 is , an area.
Answer: D) 17
The perimeter of a rhombus-shaped window pane is 68 cm. How long is each of its sides (in cm)?
Class 7Perimeter and AreaPerimeter and Area
Key idea: Triangle area
**Area of a triangle = ½ × base × height.**
The base is any side you choose; the height is the perpendicular distance from that base to the opposite vertex (NOT the slant length of another side). For a right triangle, the two legs that meet at the right angle ARE the base and height.
Example: triangle with base 6 cm and height 4 cm. Area = ½ × .
The perimeter of a triangle is just the sum of its three sides — no formula needed.
The base is any side you choose; the height is the perpendicular distance from that base to the opposite vertex (NOT the slant length of another side). For a right triangle, the two legs that meet at the right angle ARE the base and height.
Example: triangle with base 6 cm and height 4 cm. Area = ½ × .
The perimeter of a triangle is just the sum of its three sides — no formula needed.
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