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mina [271]
3 years ago
7

Please help me, I'm trying to find total surface area!

Mathematics
1 answer:
4vir4ik [10]3 years ago
5 0

Find the total surface area of the solid.


The faces of this solid are

1 rectangle  8 cm × 20 cm;

1 rectangle  17 cm × 20 cm;

1 rectangle  15 cm × 20 cm;

2 triangular bases (right triangles). The area of each one is

(8 cm × 15 cm)/2.


Total surface area:

A = 8 × 20 + 17 × 20 + 15 × 20 + 2 × [ (8 × 15)/2 ]

A = 160 + 340 + 300 + 120

A = 920 cm^2   <——<span>—    this is the answer.


I hope this helps. =)
</span>
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What's the answer to -7=c-6
son4ous [18]
Simple...

you have: -7=c-6

You want to isolate the variable c

-7=c-6
   
-7=c-6
+6   +6

-1=c

Thus, your answer.
6 0
3 years ago
This box can be packed with 48 units cubes. The edge length of each unit cube is 1 meter. What is the volume of the box?
Dafna1 [17]

48 m³

Step-by-step explanation:

A cube has equal length width and height

A cube in this case has length 1m meaning the width and height are also 1 m each in length.

The volume of the cube is (L * W * H) =  1 * 1 * 1 = 1 m³

If 48 of these can fit in the bigger box, then the bigger box has the volume of;

48 * 1 m³ = 48 m³

Learn More:

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8 0
3 years ago
A regular regular pentagon has an apothem measuring 3 cm and a perimeter of 21.8 cm. What is the area of the pentagon, rounded t
lana [24]

Answer:

The area of the pentagon is 32.7 cm.

Step-by-step explanation:


3 0
3 years ago
Read 2 more answers
each truck in the line weigh two tons more than the truck before it. the trucks weigh a total of 32 tons.how many pounds does a
mixer [17]
If there are 4 trucks then the first truck weighs x
then x+2tons
then x+4tons
then x+6tons = 32tons
so 4x+12=32
         -12   -12
     /4         /4
x=5 
so plug it back in 
truck 1= 5tons or 10,000lbs
truck 2= 7tons or 14,000lbs
truck 3= 9tons or 18,000lbs
<span>truck 4= 11tons or 22,000lbs</span>
6 0
3 years ago
A quadratic equation is shown below: 2x2 − 10x − 8 = 0 Part A: Describe the solution(s) to the equation by just determining the
dangina [55]
PART A:

The given quadratic equation is 2x²-10x-8=0

The radicand is given by b²-4ac where a, b, and c are the constants in a quadratic form ax²+bx+c

From the given equation, we have
a = 2
b = -10
c = -8

Radicand b²-4ac = (-10)² - 4(2)(-8) = 100 + 64 = 164

The radicand is >0 hence the quadratic equation has two distinct roots

PART B:

4x²-12x+5 = 0

We can use the factorization method to solve the equation
Firstly, we multiply 4 by 5 to get 20
Then we find the pair of numbers that multiply gives 20 and sum gives -12

The pair of number is -2 and -10
Rewriting the equation 
4x²-2x-10x+5 = 0
2x(2x-1)-5(2x-1) = 0
(2x-1)(2x-5) = 0

2x-1 = 0 and 2x-5 = 0
x = 1/2 and x = 5/2
6 0
3 years ago
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