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
Vanyuwa [196]
3 years ago
8

Find the surface area of the regular triangular pyramid.

Mathematics
1 answer:
crimeas [40]3 years ago
7 0
The surface of the pyramid: base + surface area of the sides.

The base area is:

By Heron formula,
s=8+8+8/2
=12

_/12(12-8)(12-8)(12-8)
=_/12(4)(4)(4)
=_/768
=27.7128..
≈27.71sq.units

The side surface areas:
(18×8/2)×3
=144/2×3
=216 sq.units

The total surface area:
216+27.71
=243.71 sq.units

Thus, 243.71 sq.units is the answer.

Hope it helps!
You might be interested in
Mary's job is to package kleenex boxes to ship out to sell at stores. the company
swat32

Volume is a three-dimensional scalar quantity. The number of kleenex boxes that can fit in the large box is 4096.

<h3>What is volume?</h3>

A volume is a scalar number that expresses the amount of three-dimensional space enclosed by a closed surface.

Given the larger box have a length of the side as 4 feet. Also, the kleenex box is a cube with side lengths of 3 inches. Therefore, the number of cubes that will fit is,

Number of boxes = Volume of Larger box / Volume of kleenex box

Number of box = (4 feet)³ / (3 inches)³

Number of box = (48 inches)³ / (3 inches)³

Number of box = 4096

Hence, the number of kleenex boxes that can fit in the large box is 4096.

Learn more about Volume:

brainly.com/question/13338592

#SPJ1

4 0
2 years ago
Help Me With These <br> #Geometry
Damm [24]
They are mad as easy try it on your own your answer is suppose to be 80
5 0
3 years ago
Which shows the equation 3y – x = 6 written in slope-intercept form?
laila [671]
Slope intercept form : y = mx + b

3y - x = 6 ....add x to both sides
3y = x + 6 ...divide both sides by 3
y = x/3 + 2 <== slope intercept form


7 0
3 years ago
The angles represented by the expressions (2x+46) and (3x-6) are complementary angles. find the measure of the larger angle. Im
ivolga24 [154]

Answer:

66

Step-by-step explanation:

complimentary angles add up to 90 so:

3x-6 + 2x +46 = 90

5x +40 = 90

5x = 50

x = 10

2(10)+46 = 66

3(10) - 6 = 24

8 0
3 years ago
Read 2 more answers
ILLL GIVE YOU 50 POINTS HAS TO BE CORRECT it got two pics
vaieri [72.5K]
The answer to the questions

4 0
3 years ago
Read 2 more answers
Other questions:
  • Which phenomena can cause waves to form in the ocean? Check all that appl
    11·1 answer
  • If y=x-6 were changed to y=x+8 how would the graph of the new function compare with the first one
    13·1 answer
  • Y=3x-2 what is the value of y? when y=-1/3
    10·1 answer
  • Plzzzz help What is the remainder of:
    12·1 answer
  • Please help meeeeee
    15·1 answer
  • Hey! I would appreciate some help with this
    5·1 answer
  • Use a model to divide. 1/4 ÷ 5<br><br> 1/20<br> 4/5<br> 1 1/4<br> 20
    10·2 answers
  • Stanley’s father is paying for a $20 meal. He has a 15% off coupon for the meal. With the discount, how much is the meal?
    12·2 answers
  • Please help<br><br> Combine like terms.<br> 9y + 5y - 3 = [? ]y + [ ]
    11·1 answer
  • Yea also all of this
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!