Answer:
120 mm²
800 in.²
Explanation:
Upper figure:
Large rectangle in the middle:
length = 5 mm + 6 mm + 5 mm = 16 mm
width = 6 mm
area = 16 mm × 6 mm = 96 mm²
2 congruent triangles:
base = 6 mm
height = 4 mm
area of each triangle = 6 mm × 4 mm / 2 = 12 mm²
Total area of net = 96 mm² + 2 × 12 mm² = 120 mm²
Lower figure:
Square in the middle:
side = 16 in.
area = 16 in. × 16 in. = 256 in.²
4 congruent triangles:
base = 16 in.
height = 17 in.
area of each triangle = 16 in. × 17 in. / 2 = 136 in.²
Total area of net = 256 in.² + 4 × 136 in.² = 800 in.²