Stage 1

Calculate the green area.

The circle is 1/5 of the total area. Calculate the green and red areas.

The flag is split into 2 equal parts.

The flag is split into 3 equal parts. The ratio of height to base length is 3:5

The yellow area is half the flag, and the blue and red are the same as each other.

Each red/white stripe is half the height of the blue strip. The height to base ratio is 2:3

Calculate the area of red and white. The ratio of height to base length is 2:3

All 3 rectangles are congruent.

Each star takes up 4 cm squared.

Calculate the area of blue and yellow. The height of the horizontal yellow strip is equal to the width of the vertical one.

The star area is 10% of the total of the yellow rectangles. The red area is 64 cm squared.

All 4 rectangles have the same area, and the total area is 144cm squared. What are the dimensions of the red rectangle.