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
posledela
3 years ago
11

Akira receives the prize at the science fair for having the most informative project her trophy is in the shape of a square pyra

mid and is covered in shiny gold foil how much gold foil did it take to cover the chair free including the bottom​

Mathematics
2 answers:
mina [271]3 years ago
7 0

Answer:

Akira needs 45 square inches of  gold foil to cover the chair free including the bottom​

<u>Step-by-step explanation:</u>

Total surface  =  surface area of the base square + area of 4 triangles

<u>Step 1: The surface area of the base square</u>

surface area of the base = surface area of the square =  s^2

where s is the side length

The the surface area of the base  = 3^2 = 9 square inches

<u>Step 2: The surface area of the side triangles </u>

The area of the triangle = \frac{1}{2}\times \text{side length} \times \text{slant height}

On substituting the values,

The area of the triangle =\frac{1}{2} \times 3 \times 6

The area of the triangle = \frac{18}{2}

The area of the triangle = 9 square inches

Now the area of 4 triangles  =  4 x 9  = 36 square inches

Thus the total surface area  =  9 + 36 = 45 square inches

Alex3 years ago
5 0

Answer:

45

Step-by-step explanation:

You might be interested in
The diagram shows an empty cylindrical container. Ana puts a solid cube of side length 8 cm into the container. She then pours 1
marshall27 [118]

Answer:

<h3><u>Cylinder</u></h3>

\textsf{Volume of a cylinder}=\sf \pi r^2 h \quad\textsf{(where r is the radius and h is the height)}

Given:

  • r = 6 cm
  • h = 18 cm

\begin{aligned}\implies \sf V &= \sf \pi (6)^2(18)\\& = \sf 648 \pi \: cm^3\end{aligned}

<h3><u>Cube</u></h3>

\textsf{Volume of a cube}=\sf x^3\quad\textsf{(where x is the side length)}

Given:

  • x = 8 cm

\begin{aligned}\implies \sf V &= 8^3\\& = \sf 512 \: cm^3\end{aligned}

<h3><u>Volume available to be filled with water</u></h3>

Volume of cylinder - volume of cube

= 684π - 512

= 1532.75204 cm³

    1 litre = 1000 cm³

⇒ 1.5 litres = 1000 × 1.5 = 1500 cm³

As 1500 < 1532.75204, the volume of water poured into the container is smaller than the empty space available in the cylinder.  Therefore, the water will <u>not</u> come over the top of the container.

4 0
2 years ago
Jayne is making a patchwork quilt. She is following a pattern for a triangular section but only knows the measurements shown. Wh
Novosadov [1.4K]

Answer:

20.0

Step-by-step explanation:

4 0
3 years ago
Finding the Area of a Trapezoid in the Coordinate Plane
Oksanka [162]

The area of the trapezoid is 118 squre units

<h3>Area of a trapezoid</h3>

The formula for calculating the area of a trapezoid is expressed as:

  • A = 0.5(a+b)h
  • a  = AD = √20
  • b = BC = √80
  • height = h = √40

Substitute into the formula

A = 0.5(√1600)*√40

A = 0.5 * 40 * √40

A = 20√40

A = 118 squre units

Hence the area of the trapezoid is 118 squre units

Larn more on area of a trapezoid here: brainly.com/question/1463152

7 0
2 years ago
Read 2 more answers
Students in Mr. Miller's class gain and lose stars for behavior during the day. At the end of the week, the top 3 students are g
Mekhanik [1.2K]
Could you attach the chart?
3 0
3 years ago
5000-5000×0+500+600-1100+10+10-20=
djverab [1.8K]

Answer:

5000-5000×0+500+600-1100+10+10-20=5000

3 0
2 years ago
Other questions:
  • Adam earns 50p per kilo each can weighs 15g he earns £15 how many cans
    13·1 answer
  • The product of w and 5 is less than or equal to 17.
    13·1 answer
  • If £2000 is placed into a bank account that pays 3% compound interest per year, how much will be in the account after 2years?
    14·2 answers
  • How many permutations exist of the letters a, b, c, d taken four at a time?
    6·1 answer
  • *WILL MARK BRAINLIEST* What solutions to the system of equations graphed below?
    10·1 answer
  • I only need answer to number 1 btw. My teacher said dont use trig ratios?? so im very lost.
    11·1 answer
  • To solve the equation x - 9 = 0,
    5·2 answers
  • Which equation represents the line that passes<br> through the points (-5, 5) and (9, -3)?
    9·1 answer
  • 3 posters cost 24.50, so how many can you buy with 171.50
    12·2 answers
  • Just number seven plzzzzzzzzzzzz
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!