MATHEMATICS MIDDLE SCHOOL

What is the surface area of the rectangular pyramid below?(Image)

A. 386.9 ft2
B. 593.8 ft2
C. 639.4 ft2
D. 1,053.2 ft2
What is the surface area of the rectangular pyramid below? - 1

Answers

Answer 1
Answer:

Answer:

The correct option is B.

Step-by-step explanation:

The area of pyramid is the sum of area of rectangular base and 4 triangular sides. Two triangle have base 18 ft and height 14.1 ft. Other two have base 10 ft and height 16 ft.

The area of rectangle is

A=length* width

Length of the base is 18ft and width is 10ft.

A_1=18* 10=180

The area of a triangle is

A=(1)/(2)* base * height

The area of triangle with base 18 ft and height 14.1 ft is

A_2=(1)/(2)* 18 * 14.1=126.9

The area of triangle with base 10 ft and height 16 ft is

A_3=(1)/(2)* 10 * 16=80

The total surface area of the rectangular pyramid is

A=A_1+2* A_2+2* A_3

A=180+2* (126.9)+2* (80)

A=593.8

The surface area of the rectangular pyramid is 593.8 ft². Therefore the correct option is B.
Answer 2
Answer:

Answer:

it is B

Step-by-step explanation:

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Find the distance between the following points: (-1,2) and (3,-2)

Answers

Answer:

5 units

Step-by-step explanation

Graph it out. You graph (-1,2) and (3,-2). Find the distance by seeing how many points are in between (diagnolly n this case)

Select all the answers that are true for the equation:4x^2-20=0
The equation has two solutions.
One of the answers is -√20.
One of the answers is √5.

Answers

One of the answer is 5

Answer:

5

Step-by-step explanation:

Jovita bought 3 1/3 cubic yards of mulch for the garden. She will need 2.5 cubic yards for the flowerbeds. How much mulch is left for Jovita to use for he vegetable garden?(write your answer as a decimal)HURRY IM RUNNING OUT OF TIME

Answers


1/3  =  0.333... (repeating)

-- Jovita bought  3.333 cubic yards.

-- She needs  2.5 cubic yards for the flowers.

-- The rest will be left for the veggies.
    If she doesn't spill any, that will be

                 (3.333)  minus (2.5)  =  0.833... (repeating) cubic yards.

A pizza with 2 toppings from Maria's Pizza Place costs $11.00.

A pizza with 5 toppings from Maria's Pizza Place costs $14.75.

Each topping at Maria's Pizza Place costs the same amount.

1.  What is the price per topping at Maria's Pizza Place?

2.  Write an expression that represents the cost, in dollars, of a pizza at Maria's Pizza Place given the number of toppings (n).

Answers

1.

X - base price
Y - one topping price

You have to create 2 equations:

x + 5y = 14.75 - base amount + 2 toppings give 14.75
X + 2y = 11 - base amount + 2 toppings give $11

You have deduct both equations
X - x = 0
5y - 2y = 3y
14.75 - 11 = 3.75

That means:
3y = 3.75 divide by 3
Y = 1.25

So the price of the topping is $1.25

2.

You have to calculate the base price first:

X + 2*1.25 = 11
X + 2.5 = 11
X = 8.5

Then it is simple:

Price of the pizza = base price + number of toppings multiplied by price of the topping

That means:

Price of the pizza = 8.5 + n * 1.25

Jordan buys a big drum. The diameter of a drum circle is 12 feet. What is the area of the drum?

Answers

In order to complete this question we would need to know the height of the drum and the diameter. then plug the information into this formula. A=2πrh+2πr2 (r= 1/2 diameter)

Explain the full answer

Answers

rememer you can do anything to an equaiton as long as you do it to both sides

and the erased answer is correct


10=-6.5+n
add 6.5 both sides
10+6.5=6.5-6.5+n
16.5=0+n
16.5=n
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