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aivan3 [116]
2 years ago
12

What is the surface area of the following figure?

Mathematics
2 answers:
balandron [24]2 years ago
8 0

Answer:

28 cm2

2 x 7 x 2 = 28

hope this helps

BartSMP [9]2 years ago
6 0
Surface area of a rectangular prism/box is area = 2 · (h · d + h · w + d · w)
So now just plug in the
2(2• 2+2•7+2•7)
Now solve using p.e.m.d.a.s.from the left

2(4+14+14)
2(32)
64
So answer is D




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If (−4, 11) and (−6, 5) are the endpoints of a diameter of a circle, what is the equation of the circle?
lora16 [44]

Answer:

A. (x+5)^2+(y-8)^2=100

Step-by-step explanation:

1. The standard form of the equation of a circle is (x-h)^{2} + (y-k)^2=r^2

2. To find the center we require the  midpoint   of the  2 given points

center =[\frac{1}{2}(-4-6),\frac{1}{2}(11+5)]

=(-5,8)

3. The radius is the distance from the centre to either of  the 2 given points calculate the radius using the  distance formula

d= \sqrt{(x_{2}+x_{1})^{2} +(y_{2}-y_{1})^{2}

let (x_{1},y_{1})= (-5,8) \\ and (x_2,y_2)=(-4,11)

r=\sqrt{(-4+5)^2+(11-8)^2} =\sqrt{81+9}=10

--> (x-(-5)^2+(y-8)^2=10^2

--> (x+5)^2+(y-8)^2=100

4 0
3 years ago
Read 2 more answers
Please help!!!
AlladinOne [14]

it would be 13

Step-by-step explanation:

6 0
3 years ago
27, 15, 10, 19, 24, 21, 28, 16, Find the mean absolute deviation
Brums [2.3K]
Im pretty sure the answer is 20
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3 years ago
A city has a population of 280,000 people. suppose that each year the population grows by 4.5% . what will the population be aft
Anastasy [175]

Given that population of the city is 280000.

Rate of growth of the population = r = 4.5% = 0.045

We have to find population after 15 years so time

t = 15

We can use growth formula to find the required population which is given by :

A=P(1+r)^t

Where P= starting population = 280000

r= rate of growth = 0.45

t= time = 15

now plug these values into above formula.

A=280000(1+0.45)^{15}

A=280000(1.45)^{15}

A=280000(263.34194176)

A=73735743.6928

Hence population after 15 years will be approx 73735743.

8 0
3 years ago
Given that 2x + 1 =5, what is the value of (x+3)^3
Alla [95]

Answer: 125

Step-by-step explanation:

First, solve for x in the first equation.

1) Subtract 1 from both sides.

2x = 4

2) Divide by 2 on both sides.

x = 2

Next, substitute the value of x into the second expression.

(2 + 3)^3

= 5^3

= 125

5 0
3 years ago
Read 2 more answers
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