Total surface area of a cuboid 0.7

The area of a circle is 153.86 square meters. What is the diameter of the circle?

Yuliya22 [10]

Area of circle = πr²

Given that area = 153.86 m², find the radius:

153.86 = πr²

r² = 153.86 ÷ π

r² = 48.98

r = √48.98

r = 7 m

Diameter = Radius x 2 = 7 x 2 = 14 m

Answer: Diameter = 14 m

8 0

3 years ago

Please help!!

Anni [7]

Data set 1 : the mean is (1+2+4+4+5+5+6+7+9+9+9+11) / 12 = 72/12 = 6

the MAD is :
1 - 6 = -5....|-5| = 5
2 - 6 = -4....|-4| = 4
4 - 6 = -2...|-2| = 2
4 - 6 = -2...|-2| = 2
5 - 6 = -1...|-1| = 1
5 - 6 = -1...|-1| = 1
6 - 6 = 0 ...| 0| = 0
7 - 6 = 1....|1| = 1
9 - 6 = 3...|3| = 3
9 - 6 = 3...|3| = 3
9 - 6 = 3...|3| = 3
11 - 6 = 5...|5| = 5

(5+4+2+2+1+1+0+1+3+3+3+5) / 12 = 30/12 = 2.5 <== the MAD

2nd data set :
the mean is (1+3+4+6+6+6+7+9+9+10+10+13) / 12 = 84/12 = 7

mad is :
1 - 7 = -6...| -6| = 6
3 - 7 = -4...|-4| = 4
4 - 7 = -3...|-3| = 3
6 - 7 = -1...|-1| = 1
6 - 7 = -1..|-1| = 1
6 - 7 = -1..|-1| = 1
7 - 7 = 0...|0| = 0
9 - 7 = 2...|2| = 2
9 - 7 = 2...|2| = 2
10 - 7 = 3..|3| = 3
10 - 7 = 3...|3| = 3
13 - 7 = 6...|6| = 6

(6+4+3+1+1+1+0+2+2+3+3+6) / 12 = 32/12 = 2.67 <== the MAD

the difference of the means is 1. This value is less then half of the mean absolute deviation of either data set. <== ur answer

8 0

3 years ago

Read 2 more answers

Emma is building a wall around her garden. It has take 45 minutes,and she is 75% done what is the told time it will take Emma to

kicyunya [14]

Ok so first we need to write a fraction.

75 percent/45 mins

then we convert that into a unit rate

1.67 percent/1 min

so, now that we have the unit rate, we know exactly how fast she is moving.

Now, we divide 25 by 1.67 because 25% is the distance between the completion of the gate and current state of the gate.

So we get 14.97, which we can safely round up to 15.

It will take her 15 mins more to finish the gate, and it has already taken 45, so 45+15=60

60 MINS TOTAL/ 1 HOUR

8 0

4 years ago

Simply by factoring 175

valentinak56 [21]

How to factor 175:

Find the factors of 175:

1, 5², 7

**Remember that factoring by prime numbers will get the job done more efficiently!**

Hope this helps!

3 0

4 years ago

mr.mcbride asks students to find the volume of the triangular pyramid below. which student wrote the correct expression for the

Black_prince [1.1K]

<u>Given</u>:

Given that the height of the pyramid is 20 inches.

The sides of the triangle are 9 in, 12 in and 15 in.

The expression for the area of the base written by JO is $\frac{1}{2}(9 \cdot 15)$

The expression for the area of the base written by MAE is $\frac{1}{2}(9 \cdot 12)$

We need to determine the correct expression for the area of the base written by the student.

<u>Expression for the area of the base:</u>

The area of the base of the triangular prism can be determined using the formula,

$B=\frac{1}{2}bh$

where b is the base of the triangle and h is the height of the triangle.

From the figure, the base of the triangle is 9 inches and the height of the triangle is 12 inches.

Substituting in the above formula, we get;

$B=\frac{1}{2}(9 \cdot 12)$

Thus, the correct expression for the area of the base is $B=\frac{1}{2}(9 \cdot 12)$

Hence, the expression wrote by MAE is correct.

8 0

3 years ago