Answer:
65 mm²
Step-by-step explanation:
Total surface area of the prism = area of all parts of the prism's net
✔️Area of rectangle 1 with the following dimensions:
L = 5.2 mm
W = 2.1 mm
Area = 5.2*2.1 = 10.92 mm²
✔️Area of rectangle 1 with the following dimensions:
L = 5.2 mm
W = 4.5 mm
Area = 5.2*4.5 = 23.4 mm²
✔️Area of rectangle 3 with the following dimensions:
L = 5.2 mm
W = 5 mm
Area = 5.2*5 = 26 mm²
✔️Area of the 2 traingles with the following dimensions:
b = 4.5 mm
h = 2.1 mm
Area = ½*bh
= ½*4.5*2.1
= 4.725 mm²
Total surface area = 10.92 + 23.4 + 26 + 4.725 = 65.045 ≈ 65 mm² (nearesth while number)
