All categories

4 years ago

Find The Surface Area. Geometry

Mathematics

1 answer:

Alexeev081 [22]4 years ago

7 0

The pyramid has 4 faces. Each face is a triangle with a base of 12 and a height of 7. The area of any triangle is half of the product (base)x(height). If you also want to include the area of the pyramid's base, that's a square with sides of 12, and the area of a square is the square of the length of a side.

You might be interested in

The ratio of the angle measures in a triangle is 3 : 5 : 7. What are the measures of the angles of the triangle?

NeTakaya

Answer:

36, 60, 84

Step-by-step explanation:

3+5+7=15

180/15=12

12*3=36

12*5=60

12*7=84

8 0

3 years ago

The reacttimes data set has 50 observations of human reaction times to a physical stimulus. The reaction times are named times a

scoundrel [369]

Solution: The formula for mean is:

$Mean=\frac{\sum x}{n}$

Where:

$\sum x$ is the sum of given observations

$n$ is the number of observations

$\sum x=87.12$

$n=50$

$\therefore Mean =\frac{87.12}{50}= 1.74$ rounded to two decimal places

To find the median, we need to first arrange the data in ascending order but we are already given the data in ascending order.

Therefore, the median is:

$Median=\left(\frac{n+1}{2} \right)^{th} item$

$=\left(\frac{51}{2} \right)^{th} item$

$=25.5^{th} item$

$=1.52+0.5(1.54-1.52)$

$=1.52+0.01$

$=1.53$

Therefore, the median = 1.53

4 0

3 years ago

Answer both question for 20 points and brainliest

Dmitrij [34]

Answer:

1 - c

2 - A

Step-by-step explanation:

Hey There!

So for the first one we are given the dimensions of a rectangular prism and they want us to find the volume

Remember to find the volume we use the equation

V = length x width x height

so we just plug in the values

v = 2.6 x 2.1 x 3.9 = 21.294

the closest is 20 so C is your answer

For the second one we are given a triangular prism

and they want us to find the volume

$V=\frac{1}{2} bhl$

b = base (10.3)

l = length (4)

h = height (7)

7x4=28

28x10.3=288.4

then we divide by 2

288.4/2=144.2

so your selected answer is correct

4 0

3 years ago

Please help me I am very confused.

garri49 [273]

1/2
When you put a square root into exponential form, the square root turns into an exponential fraction. Since the square root is 2, our fraction would be 1/2

If our root was a cube root, our exponent would be 1/3, etc.

7 0

3 years ago

Read 2 more answers

The dashed triangle is a dilation image of the solid triangle. What is the scale factor?

WARRIOR [948]

Answer:

1/2

Step-by-step explanation:

Take any point from the original, like (2,2) If the new point is (1,1) then the change would be 1/2

3 0

3 years ago