Chocolate bits makes candy bar in the shape of a trying in the prism. The prism is represented by the net given for packaging. The top and bottom are covered in gold foil and a faces are covered in red foil. How many centimeters two of red foil are needed for the candy bar

Answer 1

The net given for the packaging of the prism candy bar shows that there are 3 red faces - 2 rectangles and 1 triangle.

Let's calculate the total area of the two red rectangles and one red triangle:

1. Red rectangle:
Length = 5 cm
Width = 3 cm

Area of one red rectangle = Length x Width
Area = 5 cm x 3 cm = 15 cm²

Since there are two red rectangles, the total area of the two red rectangles = 15 cm² x 2 = 30 cm²

2. Red triangle:
Base = 5 cm
Height = 4 cm

Area of red triangle = (1/2) x Base x Height
Area = (1/2) x 5 cm x 4 cm = 10 cm²

Now, add the total area of the two red rectangles and one red triangle to find the total red foil needed:

Total red foil needed = Total area of the two red rectangles + Total area of the red triangle
Total red foil needed = 30 cm² + 10 cm² = 40 cm²

Therefore, 40 cm² of red foil are needed for the candy bar.