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3 years ago

The net of a triangular prism is shown below.

Mathematics

2 answers:

ollegr [7]3 years ago

8 0

Answer:

Step-by-step explanation:

perimeter of the base = 4+4+5+5=18

the first box will make up the base of the prism

and perimeter is the sum of the sides of the shape

arsen [322]3 years ago

5 0

Answer:

12 units

Step-by-step explanation:

The base of a triangluar prisim is the triangle. The perimeter is the sum of all three sides of the triangle which are 3, 4, 5

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3 years ago

Consider the given rectangle with heightequals4timeswidth. Let x be the width of the rectangle. Write an expression for the per

Salsk061 [2.6K]

Answer:

<h3>The expression for the perimeter P is $P=\frac{784+h^2}{2h}$ feet.</h3><h3> Area=49=lx square feet ( here $x=\frac{h}{4}$ )</h3>

Step-by-step explanation:

Given that rectangle with height equals 4times width.

It can be written as

$h=4\times width$

Let x be the width of the given rectangle

Therefore $h=4\times x$

$h=4x$

$\frac{h}{4}=x$

Rewritting the above equation we get

$x=\frac{h}{4}$

<h3>To write an expression for the perimeter P of the given rectangle :</h3>

Also given that area of the rectangle is 49 square feet.

Area=49 square feet.

We know area of rectangle = lw square units.

<h3>Therefore area=49=lx square feet ( here area=49 and w= $x=\frac{h}{4}$ )</h3>

Rewritting we get

lx=49 square feet.

$l=\frac{49}{x}$

$=\frac{49}{\frac{h}{4}}$

$l=\frac{49\times 4}{h}$

<h3> $l=\frac{196}{h}$ feet</h3><h3>Perimeter P $=2(l+w)$ units </h3>

$P=2(\frac{196}{h}+\frac{h}{4})$

$P=\frac{2(196)}{h}+\frac{2(h)}{4}$

$=\frac{392}{h}+\frac{h}{2}$

$=\frac{392(2)+h^2}{2h}$

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3 years ago