All categories

4 years ago

Can anybody help me solve for surface area? (Formula=add all the areas of the faces)

Mathematics

1 answer:

TiliK225 [7]4 years ago

6 0

Answer:

230.3cm^2

Step-by-step explanation:

surface area: sum of all faces

base: 12 x 2.5 = 30cm^2

back: 84 cm ^2

cross section x 2 = 7 x 2.5 = 17.5

use Pythagoras theorem to find the width of slope: 7^2 + 2.5^2 = 49 + 6.25 = 55.25. square root of 55.25 = 7.4

so, area of slope : 7.4 x 12 = 88.8cm^2

sum of all areas: 114 + 106.3 = 230.3

You might be interested in

The width of a rectangular computer screen is 2 inches more than its height. If the area of the screen is 323 square inches, fin

Lana71 [14]

Width= 19 in
Height= 17 in

WxH=323

19x17=323

5 0

3 years ago

Find an equation of the sphere with center (2, −10, 3) and radius 5. $$25=(x−2)2+(y−(−10))2+(z−3)2 use an equation to describe i

lana66690 [7]

In the $x,y$ plane, we have $z=0$ everywhere. So in the equation of the sphere, we have

$25=(x-2)^2+(y+10)^2+(-3)^2\implies(x-2)^2+(y+10)^2=16=4^2$

which is a circle centered at (2, -10, 0) of radius 4.

In the $x,z$ plane, we have $y=0$ , which gives

$25=(x-2)^2+10^2+(z-3)^2\implies(x-2)^2+(z-3)^2=-75$

But any squared real quantity is positive, so there is no intersection between the sphere and this plane.

In the $y,z$ plane, $x=0$ , so

$25=(-2)^2+(y+10)^2+(z-3)^2\implies(y+10)^2+(z-3)^2=21=(\sqrt{21})^2$

which is a circle centered at (0, -10, 3) of radius $\sqrt{21}$ .

3 0

3 years ago

A= square root of 175 b= 15 what is c

garik1379 [7]

15 x 15 = 175, that is how to find the square root.

4 0

3 years ago

Bob is thinking about leasing a car. the lease comes with an interest rate of 8%. determine the money factor that will be used t

alukav5142 [94]

The money factor that will be used to calculate Bob's payment is 0.00333 if the annual percentage rate is 8% option (c) is correct.

<h3>What is money factor?</h3>

It is defined as the ratio of the annual percentage rate to 2400. Usually, it can be used to calculating the financing costs of a lease with monthly installments.

Bob is thinking about leasing a car, the lease comes with an interest rate of 8%.

The annual percentage rate(APR) = 8%

We know the formula for finding the money factor is given by:

$\rm Money \ factor = \frac{APR}{2400}$

$\rm Money \ factor = \frac{8}{2400}$

Money factor = 0.00333

Thus, the money factor that will be used to calculate Bob's payment is 0.00333 if the annual percentage rate is 8% option (c) is correct.

Learn more about the money factor here:

brainly.com/question/9583229

8 0

2 years ago

Analyze the diagram below and complete the instructions that follow. Find the unknown side length, x. Write your answer in simpl

allsm [11]

Answer:

The value of missing side is 32 unit .

Step-by-step explanation:

Given as :

The measure of hypotenuse = h = 60 unit

The other side = base = b = 68 unit

Let The missing side = x unit

Now, <u>From Pythagoras Theorem</u>

Hypotenuse² = Perpendicular² + Base²

And From figure

Or, p² = b² - h²

So, p² = 68² - 60²

Or, x² = 4624 - 3600

Or, x² = 1024

∴ x = $\sqrt{1024}$

I.e x = 32 unit

So,The missing side = x = 32 unit

Hence The value of missing side is 32 unit . Answer

4 0

3 years ago