Question

what percentage of the shape is purple?
write your answer using a percent sign (%).

Explanation:

Step1: Count total number of squares

The grid is a 10x10 square, so total squares = $10 \times 10 = 100$

Step2: Count white squares

There are 1 white square in the 7th row, plus 2 full rows of white squares (10 each): $1 + 10 + 10 = 21$

Step3: Calculate purple square count

Purple squares = Total squares - White squares = $100 - 21 = 79$

Step4: Convert to percentage

Since total squares are 100, purple percentage = $\frac{79}{100} \times 100\% = 79\%$

Answer:

79%