Question detail
notation check: a rectangular poster has length 25 cm and width 23 cm. Find its area. Show your working one step at a time.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Ratio, proportion and rates of change
Question
notation check: a rectangular poster has length 25 cm and width 23 cm. Find its area. Show your working one step at a time.
Answer
The final answer is 575 cm^2. Area measures the square units inside the rectangle. Use the rectangle area method with length and width. The length is 25 cm. The width is 23 cm. Multiply 25 by 23. 575 cm^2
Explanation
exam warm-up keeps the canonical answer 575 cm^2 fixed before the model answer is written, so the worked solution and final answer agree.
Common mistake
Compound units common mistake 1
Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Use compound units such as speed, rates of pay and unit pricing..
Show the method first, then give the final answer in the required form. Apply this directly to Compound units.
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