Meenakshi cuts a 5 cm square from each corner of a metal sheet 40 cm by 30 cm and folds up the sides to make an open box. What is the volume of the box?

1,500 cm³Correct answerYour answer3,000 cm³Correct answerYour answer4,375 cm³Correct answerYour answer6,000 cm³Correct answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer B

Correct answer: B

Removing a 5 cm square at each end shortens each side by 10 cm: the base is 30 cm by 20 cm.
The folded sides make the height 5 cm.
Volume = $30 \times 20 \times 5 = 3{,}000$ cm³.

Worth noting

4,375 cm³ takes 5 cm off only one end of each side, and 6,000 cm³ uses the full sheet as the base.

Ten questions from Mensuration: Areas and Volumes, at your own pace.

Ten questions from Mensuration: Areas and Volumes, at your own pace.

Explanation