Go Area of composite shapes
Find the area of the shape shown below.
1
13
12
6

42

Step-by-step explanation:

Think of it as a long rectangle and a triangle

12cm (rectangle)

12*5=60 60/2 = 30

12+30=42

Answer =42

Step-by-step explanation:

12x5=30.

12+30=60. 60/2=30

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.