P=2L+2W and L=2W-5
2(2W-5)+2W=50
4W-10+2W=50
6W-10=50
6W=60
W=10
Answer:
shaded area = 601 mm²
Step-by-step explanation:
Area of rectangle = Length * Breadth
Area of first section = 12 * 16 = 192 mm²
Area of 2nd middle section = 8 * ( 16 - 10 ) = 48 mm²
Area of the bottom section = 19 * 19 = 361 mm²
Area of total therefore = 192 mm² + 48 mm² + 361 mm²
= 601 mm²
Soooooo sorry but I only understood part a and c.
sorry