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pickupchik [31]
3 years ago
14

Help me find surface area of this shape

Mathematics
1 answer:
lozanna [386]3 years ago
4 0
The triangle <span>pyramid</span>  is made up of 4 triangles.

------------------------------------
Formula:
------------------------------------
Area of triangle = 1/2 x base x height

------------------------------------
Area of the bottom triangle:
------------------------------------
Area = 1/2 x 9 x 7.8
Area = 35.1 yd²

------------------------------------
Area of the 3 side triangles:
------------------------------------
Area = 3 [ 1/2 x 9 x 10 ]
Area = 135 yd²

------------------------------------
Total Area:
------------------------------------
Total Area = 135 + 35.1 
Total Area = 170.1 yd²

------------------------------------------------------------------------
Answer: Surface Area = 170.1 yd².
------------------------------------------------------------------------

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Joe opened a book store. On the first three days he sold 15, 18, and 16 books (he initially hoped he sell 17 books everyday). Ho
soldi70 [24.7K]

\frac{15 + 18 + 16 + x}{4}  = 17  \\  \frac{49 + x}{4}  = 17 \\ 49 + x = 17 \times4 \\ 49 + x = 68 \\ x = 68 - 49 \\ x = 19
hope this helps! ask if you have anymore questions
5 0
3 years ago
Answer question 10 and 11 completely please
Katarina [22]
QUESTION 10:

- The long edge of the paper is 11 inches long
- The frame is 4 long edges long
4 times 11 = 44 inches.
Now for the feet calculation!
- 1 foot = 12 inches
44 inches divided by 12 inches is 3 2/3 feet.

RESULT:
Cameron's poster frame is 44 inches long and 3 2/3 feet (OR 3.66666667 feet).

QUESTION 11:

- First, convert 3 yards into feet.
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- 3 yards = 9 feet
- 9 feet plus 2 feet = 11 feet.
- Converting feet into inches means multiplying the number of feet by 12 (since every foot has 12 inches)
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RESULT:
Use my explanation to determine that 3 yards and 2 feet = 132 inches.
8 0
3 years ago
A colony of ants has 50,000 members. Sione thinks the colony will grow at a rate of 3.1% each hour. How many ants should he expe
Lubov Fominskaja [6]
3.1% of 50,000 is 1,550 if I were to multiply that by 10 that would equal 15,500 add that to 50,000 it equals 65,500
5 0
3 years ago
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Mp.6 Be Precise Ernesto measured the width of each of the three coins shown below.
Verdich [7]

Answer:

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Step-by-step explanation:

We are given three coins with width 0.7, 0.84 and 0.74 inches.

Now, as 0.84 > 0.7 and 0.84 > 0.74.

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Also, as 0.7 < 0.74 and 0.7 < 0.84.

So, the coin with the smallest width is the coin of width 0.7 inch.

Therefore, the difference in the largest and smallest width of the coins is 0.84 - 0.7 inch i.e. 0.14 inch.

Hence, the difference in width is 0.14 inch.

5 0
3 years ago
What is 7.25 in word form
Minchanka [31]
<span>7.25 = s</span><span>even and twenty-five hundredths</span>
<span>Hope I helped:P </span>
3 0
3 years ago
Read 2 more answers
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