Question

Can someone help me please?

Answer 1

Answer:

55 percent

Step-by-step explanation:

Perimeter = 20cm

Size of 1 side = 20/4 = 5cm

Area of square = 5 x 5 = 25 cm²

We can find the area of shaded region by subtracting the are of the two triangle

Triangle 1

Base = 5cm

Height = 5 - 1.5 = 3.5cm

Area = 1/2 bh

= 1/2 (5 x 3.5)

= 1/2 17.5

= 8.75 cm²

Triangle 2

Base = 5 cm

Height = 5 - 4 = 1cm

Area = 1/2 bh

= 1/2 (5x1)

= 1/2 5

= 2.5 cm²

Area of unshaded region = 8.75 + 2.5 = 11.25 cm²

Area of shaded region = 25 - 11.25 = 13.75 cm²

13.75 of 25 = 55 percent