All categories

3 years ago

How do u do this? Plz show work!!!

Mathematics

1 answer:

Pepsi [2]3 years ago

3 0

If you draw a diagonal from upper left to lower right, you divide the figure into two triangles. One is a 3-4-5 right triangle (with area = (1/2)*3*4 = 6). The other is a 5-5-4 isosceles triangle.

The altitude of the isosceles triangle (upper left vertex to side 4) can be found from the Pythagorean theorem as
.. altitude = √(5^2 -2^2) = √21
So, the area of the isosceles triangle is
.. (1/2)*4*√21 = 2√21

The sum of the areas of the two triangles matches selection C.

You might be interested in

The lateral area of a right cylinder which has a base diameter of 12 cm and a height of 8 cm is?

garik1379 [7]

Answer:

$A = 301.59\ cm^2$ or $A=96\pi\ cm^2$

Step-by-step explanation:

The lateral area of a cylinder is calculated by the following formula

$A = 2\pi r * h.$

Where r is the radius of the right cylinder and h is the height

In this case we know that the diameter d of the cylinder is

$d=2r\\\\r=\frac{d}{2}\\\\r=\frac{12}{2}\\\\r=6\ cm$

$h=8\ cm$

Therefore the lateral area is:

$A = 2\pi*6 * 8.$

$A = 96\pi$

$A = 301.59\ cm^2$

8 0

3 years ago

Read 2 more answers

Im in need of help so please help[ :)))

const2013 [10]

Given:

Consider the pentagon MVEDR is dilated with the origin as the center of dilation using the rule $(x,y)\to(\dfrac{2}{3}x,\dfrac{2}{3}y)$ to create pentagon M'V'E'D'R'.

To find:

The correct statement.

Solution:

If a figure dilated by factor k, then the rule of dilation is

$(x,y)\to (kx,ky)$

Here,

If k>1, then the image is larger than the original figure.

If k<1, then the image is smaller than the original figure.

We have,

$(x,y)\to(\dfrac{2}{3}x,\dfrac{2}{3}y)$

Here, M'V'E'D'R' is image and MVEDR is original figure. The scale factor is

$k=\dfrac{2}{3}$

Pentagon M'V'E'D'R' is smaller than pentagon MVEDR because the scale factor is less than 1.

Therefore, the correct option is B.

4 0

2 years ago

What is generally used to wash table wares, surface, and equipment?

Nadusha1986 [10]

Answer: Clorox, wet wipes, and water

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

The length of a rectangle is 5 ft longer than its width. If the perimeter of the rectangle is 38 ft , find its area.

Wittaler [7]

Ok so basically L=5+w
w=w
P=38
and A=?
well we know that P=all the four sides added so
38=2(5+w)+2w
38=10+2w+2w
38=10+4w
28=4w
w=7
so if L=w+5 then L=7+5 so L=12
A=LxW so A=12x7 A=84

4 0

3 years ago

A rectangle has a height of 4cm and a width of 8cm what is the area

aleksley [76]

Answer: 32

Step-by-step explanation:

4cm × 8cm = 32cm

5 0

3 years ago