Multiple choice

If the lateral surface area of a cube is $1600 cm^2$, then its edge is

  1. $15cm$
  2. $18cm$
  3. $20cm$
  4. $25cm$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lateral surface area of a cube = 4 * side^2. 4 * a^2 = 1600, so a^2 = 400, a = 20 cm.

AI explanation

The lateral surface area of a cube is calculated using the formula 4a^2, where a is the edge length. Setting this equal to 1600 cm^2 gives 4a^2 = 1600, so a^2 = 400. Taking the square root yields an edge length of 20 cm.

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