Three of these are wrong. Find the one that holds.

Exercise and reference answers

Questions

1. Question

   Three of these statements about a cube are false.

   Choices

   1. Item

      Its surface area is 6l²

      Correct

      Yes

   2. Explanation

      That is the SURFACE AREA of a cube.

      Item

      Its volume is 6l²

   3. Explanation

      That is the volume.

      Item

      Its surface area is l³

   4. Explanation

      Volume needs three lengths, not two.

      Item

      Its volume is 4l²

2. Question

   Three of these statements about a cylinder are false.

   Choices

   1. Item

      Its volume is πr²h

      Correct

      Yes

   2. Explanation

      That is its surface area.

      Item

      Its volume is 2πr(r + h)

   3. Explanation

      That is its volume.

      Item

      Its surface area is πr²h

   4. Explanation

      Height multiplies the base area.

      Item

      Its volume ignores the height

Explanation