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
pogonyaev
3 years ago
7

Find the SLANT HEIGHT of the pyramid, then calculate its SURFACE AREA.

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
3 0

Answer:

13 cm

Step-by-step explanation:

slant height = \sqrt{12^2 +\frac{10^2}{4} }

=\sqrt{144 + \frac{100}{4} }

=\sqrt{144 + 25}

=\sqrt{169}

=13 cm

a=10 cm

l =

surface area =a^{2} + 2a \sqrt{\frac{a^{2} }{4} +h^{2}  }

=10^{2} +2*10 \sqrt{\frac{10^{2} }{4} +12^{2} } \\100 + 20 \sqrt{\frac{100}{4} + 144} \\100 + 20\sqrt{25 + 144} \\100 + 20 \sqrt{169} \\100 + 20*13\\100 + 260\\360 cm^2

You might be interested in
Paige earns $15.50 per hour and works 20 hours each week. She gets a 10% raise and decides to save 20% of her paycheck for a new
Sindrei [870]

Answer: b

Step-by-step explanation:

7 0
2 years ago
Find the volume of a rectangular prism with a length of 2.5, a width of 8 and a height of 12. a0 cubic units.
Stella [2.4K]

Answer:

240 cubic units

Step-by-step explanation:

2.5×8×12=240cubic units

6 0
3 years ago
Meredith invested $5,500 into an account that earned 5% interest per year. When she cashed out the investment to use it as a dow
shtirl [24]

Answer:

Step-by-step explanation:

Using I = PRT/100

where P = The principal amount invested = $5500

R = Rate of Interest =5%

T = Time (in years)

I = Interest = $7,739.05 - $5500 = $2239.05

Substituting the above values in the formula

I = PRT/100 becomes

2239.05 = 7,739.05 * 5 * t / 100 -------- Multiply 100 to both sides

2239.05 * 100 = 100 * 7739.05 * 5 * t / 100

223905 = 7739.05 * 5 * t

223905 = 38695.25t

Divide both sides by 38695.25t

223905/38695.25 = t

5.786369 = t

T = 5.79 (approximated)

8 0
3 years ago
Which of the following could be the measure of the third side of a triangle if one side measures 15 cm and another measures 8 cm
Phoenix [80]

Answer:

12, 17

Step-by-step explanation:

Two sides must add up to a greater sum than that of the remaining side

6 0
3 years ago
Translate the English phrase into an algebraic expression: the difference of f and the quotient of g and h.
wel

Answer:

f-(g/h) is an algebraic expression of the difference of f and the quotient of g and h.

Step-by-step explanation:

f - ( \frac{g}{h} )

I hope it was helpful for you..m

7 0
2 years ago
Other questions:
  • 9 is the difference of a number n and 7
    10·2 answers
  • Mary Jo takes her son to get a haircut at the barbershop. The total cost of the haircut is $12.60, including a 20% tip. How much
    11·1 answer
  • 868/31 long division
    14·2 answers
  • Using the numbers1,3,4,8 and the operation +, -, x, ( ) to get an answer of 18. What is possible solution?
    7·1 answer
  • Solve each system using substitution: 7x-2y=1 2y=x-1
    7·1 answer
  • Please can someone help me out​
    5·2 answers
  • Find the length of each arc<br> r=13 ft x=90 degrees
    5·1 answer
  • Which fraction is equivalent to 5/20?<br><br> 4/16<br><br><br> 4/12<br><br><br> 4/19<br><br> 4/15
    15·1 answer
  • Plzz help Drag each graph to the correct location on the table.
    6·1 answer
  • Questions in Image below. Please explain how you got your answers in depth please.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!