Question

Find the area of the shaded region in which the dimensions given are in cm. ​

Answer 1

Area of the big box: 12x25c=300

Area of the equilateral triangle= 43.3

Area of right angle triangle=40

Area of the square= 9

Area of the 2nd right angle triangle=10

Area of the shaded region= 300-(43.3+40+9+10) = 197. 7

Hope it's correct.