VTMO 2026 - Grade 4 - Semifinal - SET 1 - Self-study Question 15

Question 15

Bình puts two identical squares and two identical rectangles into a rectangular box, leaving the shaded square-shaped gap shown. What is the area of the gap, in square centimetres? The diagram is not drawn to scale.

Question illustration

$225\text{ cm}^2$
$256\text{ cm}^2$
$196\text{ cm}^2$
$289\text{ cm}^2$
$324\text{ cm}^2$