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
spayn [35]
3 years ago
11

Need help in this question about surface area

Mathematics
1 answer:
Aleksandr [31]3 years ago
6 0

Answer:

254.44cm²

Step-by-step explanation:

For the triangles do pythagoras theorem:

a²+b²=c²

c=hyptonuse=8.8

b=6.2

so we don't know what a is.

We rearrange a²+b²=c² to get a²=c²-b²

8.8²=77.44

6.2²=38.44

77.44-38.44=39

square root of 39 is 6.2(1 d.p)

a=6.2

6.2x6.2=38.44cm²

6.2x7.2=44.64cm²x2=89.28cm²

8.8x7.2=63.36cm²x2=126.72cm²

126.72+89.28+38.44=254.44cm²

You might be interested in
23 mins after 9 in time can you help me please
Stolb23 [73]

Answer:

9:23 simple

Step-by-step explanation:

4 0
3 years ago
Determine the solution to the system of equations graphed below and explain your reasoning in complete sentences.
Anarel [89]

Answer:

  (0, -3)

Step-by-step explanation:

The solution to the system of equations is the point at which they intersect. The problem statement tells you that point is (x, y) = (0, -3).

__

Often, for a system defined using functional notation, we don't care about the value of the function. We only care about the value of x where the functions have the same value. That is ...

  the solution to f(x) = g(x) is x = 0.

3 0
3 years ago
I still haven't finished this and it's due today. i really would appreciate some help .
Svetlanka [38]
A
x X x
= x^2

B
20 x 20 = 40

C
100 / 40 = 2.5 per square inch
4 0
3 years ago
The formula for the perimeter (P) of a rectangle is
shutvik [7]

Answer:

174

Step-by-step explanation:

L = 68

W=19

Use the formula given:

2 x 68 + 2 x 19 = 174

4 0
3 years ago
A school principal wants to find out if his school needs more bike racks. a survey is taken of 30 students who ride their bikes
Sergio039 [100]
Hello there.

Question: <span>A school principal wants to find out if his school needs more bike racks. a survey is taken of 30 students who ride their bikes to school. why might the sample be biased?

Answer: It might be biased as the survey was only taken of students who ride their bikes to school. It is most likely that they would agree to it. To make it fair they survey should have been taken of a variety of different students.

Hope This Helps You!
Good Luck Studying ^-^</span>
7 0
3 years ago
Other questions:
  • What expression is equivalent to 2^6 times 2^-4/ 2^7
    6·1 answer
  • a company is offering a job with a salry of 30000 for the first year and a 5% raise each year after that If the 5% raise continu
    14·1 answer
  • Last week a store sold laptops worth a total of $10885 each laptop cost $1555 how many laptops did the store sell last week?
    13·2 answers
  • Write a cosine function for the graph?
    6·1 answer
  • What is the first step in solving the equation 3.5 n + 6.4 = 42.5?
    9·2 answers
  • Lily types 100 words in 2 minutes. what is her unit rate of typing ?
    10·2 answers
  • In simplest form, what is the ratio of triangles to circles?
    15·2 answers
  • 2.25 x 10 to the 10 standard notation
    7·1 answer
  • Akris has a Quilted Calfskin bag on their website for this season in the shape of a trapezoid. Ms. Johnson called the company to
    15·1 answer
  • Which of the following statements is true?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!