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Word problemsArithmeticMiddle schoolabout 0:38

The perimeter of a square is 36. What is its side length?: animated lesson

A narrated, step-by-step word problems video lesson with captions. Final answer: Side = 9 units; area = 81 square units.

SpeedLanguage

Video with a synthetic English voice and captions. Pick another language for subtitles in that language, or open the interactive version.

Video narrated by a synthetic voice (Piper TTS, en_US-ljspeech-high voice (LJ Speech dataset, public domain)); the steps come from our maths engine and the answer was checked independently. Download MP4 (0.2 MB) · Captions (WebVTT)

Steps on screen

1. The problem
Worked example
The perimeter of a square is 36. What is its side length?
2. Step by step
1. Read the problem
2. Side
3. Area
3. The answer
$\text{Side = 9 units; area = 81 square units}$
Side = 9 units; area = 81 square units
4. Check
- 4 × 9 = 36 ✓

Transcript

The problem. Here is the problem: The perimeter of a square is 36. What is its side length? A square with perimeter 36.

Step by step. Read the problem. Square, perimeter P equals 36. Side. s equals P / 4 equals 9. Area. A equals s squared equals 81.

The answer. So the answer is Side equals 9 units; area equals 81 square units. Area counts square units inside the shape; perimeter is the distance around it.

Check. 4 times 9 equals 36, which checks out.

About word problems

Turn everyday situations about prices, speed, ages and interest into equations and solve them.

The perimeter of a square is 36. What is its side length?