Calculate the Percentage: Shaded Area in Rectangle Problem

Question

What percentage does the shaded area of the figure represent?

Video Solution

Solution Steps

00:00 Estimate the colored part
00:06 Let's divide the drawing in half, it appears more than half is colored
00:12 Let's eliminate the options smaller than half
00:28 Looking at the whole, the colored part isn't as close to 100 as 99
00:35 And this is the solution to the question

Step-by-Step Solution

It can be said with certainty that the shaded area is larger than half of the shape.

That is, the shaded part is more than 50%.

Therefore, we can disregard answers B and D.

The unshaded part is greater than 1% of the figure; it is not possible for 100 such parts to form the complete shape, therefore, we can disregard answer C.

Therefore, the correct answer must be 80%.

Answer

80%