What is 30.12 rounded to one decimal place

Mathematics

2 answers:

leva [86]4 years ago

5 0

it should be rounded to 30.1

AleksandrR [38]4 years ago

3 0

The answer you seek is 30.1

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Which equation can be used to calculate the surface area of the triangular prism net show below? The net of a rectangular prism.

gizmo_the_mogwai [7]

The $13\times10+12\times10+5\times10+\rm \frac{1}{2} \times 5 \times12+\rm \frac{1}{2} \times 5 \times12$ equation can be used to calculate the surface area of the triangular prism.

It is given that the triangular prism net showing in the figure with dimensions.

It is required to find which equation can be used to find the surface area of the triangular prism net.

<h3>What is surface area?</h3>

It is defined as the area of 3-dimensional geometry surfaces area sum which is occupying the outer area of the object.

We know the area of a rectangle = length × width

Area of the top rectangle = 13×10

Area of the middle rectangle = 12×10

Area of bottom rectangle= 5×10

The formula for finding the area of a triangle:

$\rm A=\frac{1}{2} \times bh$

Area of right triangle = $\rm \frac{1}{2} \times 5 \times12$

Area of left triangle = $\rm \frac{1}{2} \times 5 \times12$

The surface area = Area of top+ Area of middle+ Area of bottom+ Area of

a right triangle+ Area of the left triangle

$=13\times10+12\times10+5\times10+\rm \frac{1}{2} \times 5 \times12+\rm \frac{1}{2} \times 5 \times12$

Thus, the $13\times10+12\times10+5\times10+\rm \frac{1}{2} \times 5 \times12+\rm \frac{1}{2} \times 5 \times12$ equation can be used to calculate the surface area of the triangular prism.

Learn more about the surface area here:

brainly.com/question/1196953