1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sholpan [36]
3 years ago
13

How to do this question plz ​

Mathematics
1 answer:
andre [41]3 years ago
7 0
The correct answer is : 340 cm^2


Explain

Trapezium area
1/2h (a+b)

Base area = 1/2h (a+b)

Base area = 1/2(3)(8+12)


As 20/2 = 10

Base area = 3(10)

Base area = 30 cm^2

Use perimeter: 28

Base Area = 30
Height = 10


Surface area = 2(30)+28(10)

Surface area= 60+ 280

Surface are = 340


Glad this help you

Good luck :-D




You might be interested in
Nina opened a savings account and deposited $300.00. The account earns 4% interest, compounded monthly. If she wants to use the
mylen [45]

Answer:

up to $338.18

Step-by-step explanation:

Use the compound amount formula:

A = P(1 + r/n)^(n*t), where r is the interest rate as a decimal fraction and n is the number of compounding periods per year.

Here, A = $300(1 + 0.04/12)^(12*3), or

          A = $300(1.0033333)^*36, or

          A = $300(1.127) = $338.18

Nina will be able to spend up to $338.18 on a new bike.

5 0
3 years ago
Read 2 more answers
9 3/10 - 5 3/4 as a mixed number in simplest form
Artemon [7]

Answer:

3 1/20

Step-by-step explanation:

First, we will convert the mixed numbers into improper fractions...

9 3/10 (9*10=90+3=93) so the improper fraction is 93/10

5 3/4 (5*4=20+3=23) therefore the improper fraction is 23/4

We then want to make the denominator the same...

93/10 (*4) = 372/40

23/4 (*10) = 230/40

We then put it into the question...

372/40 - 230/40 = 142/40

Lastly, we now need to turn this into a mixed number...

142/40=3.55 so the answer is 3 2/40

3 2/40 in it's simplest form is 3 1/20

Hope this helps!

6 0
3 years ago
Read 2 more answers
Use the proportion. What is 72% of 150
kherson [118]

Answer:

108

Step-by-step explanation:

150x0.72=108

4 0
2 years ago
Read 2 more answers
What is the point estimate for the number of cars sold per week for a sample consisting of the following weeks: 1, 3, 5, 7, 10,
Romashka [77]
Hi.
your answer is c: 6.38 but the actual answer of your question is 11.
hope this helps!!!
5 0
3 years ago
Read 2 more answers
A cube and a square pyramid were joined to form the composite solid.
Yakvenalex [24]
We know that
<span>total surface area of the composite solid=surface area of the pyramid+surface area of the cube

surface area of the pyramid=4*area of lateral triangle side
area of lateral triangle side=12*9/2----> 54 in</span>²
surface area of the pyramid=4*54---> 216 in²

surface area of the cube=5*[12*12]----> 720 in²

total surface area of the composite solid=216 in²+720 in²---> 936 in²

the answer is the option
<span>936 square inches </span>
5 0
3 years ago
Other questions:
  • What is 1/10 of an income of $97.50?
    8·2 answers
  • Multiply 2.1 and the number r results in 6.174. <br><br> What is the value of r?
    15·2 answers
  • What is the measure of
    9·1 answer
  • I have to figure out what x equals ​
    13·1 answer
  • How to solve 3y² + 2y - 8​
    8·2 answers
  • If the side length of a square is 4 inches, its area is __ square inches and its priemeter is __ inches.
    8·1 answer
  • Helphelphelphelp please
    8·1 answer
  • The cargo of the truck weighs at most 2,900 pounds. Use w to represent the weight (in pounds) of the cargo.
    7·1 answer
  • Algebra <br> Level: High School
    15·1 answer
  • A right triangle has one side that is 6 inches
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!