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3 years ago

Given the net with dimensions below, find the surface area of the shape.

Mathematics

1 answer:

Colt1911 [192]3 years ago

8 0

Answer:

136 cm²

Step-by-step explanation:

I'm going to split the net into:

2x 7 cm by 2 cm rectangles

2x 6 cm by 7 cm rectangles

2x 6 cm by 2 cm rectangles

The 2x means there's 2 of them.

Let's find the area of the 2x 7 cm by 2 cm rectangles:

2*7*2=

4*7=

28 cm²

Let's find the area of the 2x 6 cm by 7 cm rectangles:

2*6*7=

2*42=

84 cm²

Let's find the area of the 2x 6 cm by 2 cm rectangles:

2*6*2=

12*2=

24 cm²

Adding all these areas together gives us the surface area of the net:

28+84+24=136 cm²

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Critical probability is the essentially cut-off value. The critical probability when the confidence level of 58% is 0.79.

<h3>What is the critical probability?</h3>

Critical probability is the essentially cut-off value that defines the region where the test statistic is unlikely to lie.

As it is given that the confidence level is 58%. therefore, in order to calculate the critical probability, we need to calculate the margin of error within a set of data, and it is given by the formula

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Hence, the critical probability is 0.79.

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