Question

Which of the following regions represents 3x?

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

In the given figure all the figures are rectangles. Since, length and breadth of the rectangles are given so area of each rectangle can be calculated.
Area of Purple region = $x\times x=x^2$
$\therefore$ Purple region represents $x^2$.
Area of red region = $x\times 2=2x$
$\therefore$ Red region represents 2x.
Area of sky blue region = $x\times 3=3x$
$\therefore$ sky blue region represents 3x.
Area of yellow region = $2\times 3=6$
$\therefore$ area ofyellow region represents 6.