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nekit [7.7K]
3 years ago
8

Find the surface area of the Rectangular Pyramid. Please see the attachment, of course 45 yards ^2 is not the correct answer. Th

anks!

Mathematics
2 answers:
zheka24 [161]3 years ago
8 0

Answer:

Surface area = 39 yards²

Step-by-step explanation:

∵ the surface area of the pyramid = 1/2 pl + base area

  Where p = perimeter of the base , l = slant height

∵ Area of the base = 3 × 3 = 9 yards²

∵ Perimeter of the base = 4 × 3 = 12 yards

∵ Slant height = 5 yards

∴ The surface area = 1/2 × 12 × 5 + 9 = 39 yards²

HACTEHA [7]3 years ago
5 0
<h2>Answer:</h2>

<u>The correct option is </u><u>(B) 39.8 yd²</u>

<h2>Step-by-step explanation:</h2>

A rectangular pyramid consists of four triangular lateral faces and a rectangle base. The sum of the area of the rectangle base and area of the four triangular lateral faces gives the surface area of rectangular pyramid.  We use the following formula

Surface Area = Base Area + Lateral Area

where

Base Area = l × b

and

Lateral Area = 1/2 ls1 + 1/2 bs2 + 1/2 ls1 + 1/2 bs2  = ls1 + bs2

So

Surface Area = Base Area + Lateral Area SA =  lb + ls1 + bs2

Putting the values we get 39.9

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A bus makes several stops along a city street, with no passengers boarding the bus at any stop. At the first stop, 1/3 of the pa
notka56 [123]

Answer:

The fraction of passengers remaining on the bus is 5/21

Step-by-step explanation:

To answer this question, we should choose any arbitrary value for the number of passengers on the bus initially.

We should have in mind that whatever value we shall be choosing, it should be a multiple of 3 and 7 since that is what we shall be dividing with.

Now, let’s choose the value 42 for the number of passengers originally at the on the bus.

At the first stop, 1/3 of the passengers exit. The number of passengers that exited will be 1/3 * 42 = 14

At the second stop, the number of passengers that exited is 3/7 of original. That would be 3/7 * 42 = 18 passengers

The total number of passengers that this have exited since we do not have any new addition to the original number is 18 + 14 = 32 passengers

Now the number remaining on the bus will be 42 - 32 = 10 passengers

This is equal to a fraction of 10/42 = 5/21

5 0
3 years ago
What is the value of a1 for a geometric sequence with a4=40 and a6=160?
Elenna [48]

Answer:

5

Step-by-step explanation:

The nth term of a geometric series is:

a_n = a₁ (r)^(n-1)

where a₁ is the first term and r is the common ratio.

Here, we have:

40 = a₁ (r)^(4-1)

160 = a₁ (r)^(6-1)

40 = a₁ (r)^3

160 = a₁ (r)^5

If we divide the two equations:

4 = r^2

r = 2

Now substitute into either equation to find a₁:

40 = a₁ (2)^3

40 = 8 a₁

a₁ = 5

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8.10/2 + 2.3 = 46 total area is 46

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Looking at h and k values.

The vertex of a parabola ( h, k) is the point at which the parabola intersects the axis of symmetry.

Every parabola is symmetric about its axis, which means that if it were folded along its axis, the two parts would match. The fold or line that divides the parabola into two matching halves is called the axis of symmetry.

The axis of symmetry occurs at x = h.

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3 years ago
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