Answer:
The calculation of the area of the triangle is incorrect
Step-by-step explanation:
To find the surface are of the net for the polyhedron, each area of the net will be calculated. There are 2 rectangles, 1 square, and 2 triangles that made up the net of the polyhedron.
To find out which calculation is incorrect, let's do our own calculation and compare with what Jada has:
Area of rectangle = lenght * width
Area of rectangle with lenght: 5 cm, width: 4cm
Area = 5*4 = 20 cm²
Area of square with side: 4 cm,
Area = 4² = 16 cm²
Area of rectangle with lenght: 4 cm, width: 3cm
[tex] Area = 4*3 = 12 cm^2 [/tex]
The 2 triangles have the same dimensions:
Height = 3 cm
Base = 4 cm
Area of triangle = ½*base*height
Area of each triangle = ½*4*3 = 2*3 = 6 cm²
This is different from what Jada calculated. Jada's calculation for the area of each of the triangles is incorrect. The area should be 6 cm² not 12 cm².
Surface area of the net = 20 + 16 + 12 + 2(6) = 60 cm²
