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Alik [6]
3 years ago
13

Help!! include working out please :)

Mathematics
1 answer:
Elena-2011 [213]3 years ago
3 0
If the perimeter of a circle is d*pi, then you would do ((30*3.14)-(20*3.14))/2 to find the perimeter. 30*3.14=94.2 20*3.14=62.8 94.2-62.8=31.4 31.4/2=15.7 cm
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Find the sum of -3a + 2 and 5a - 3
Anon25 [30]

Answer

-1(3a-2)

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
How many of the scores from the group that studied in question eight are in one mean absolute deviation of the mean? Which score
n200080 [17]

Answer:

93

Step-by-step explanation:

<u><em>Add all of the numbers and divide them by the number of numbers there are.


</em></u><em>Hope this helped  ·ω·</em>

4 0
2 years ago
Please help me thanks please <br> Will give you brainlest
Akimi4 [234]

Answer:

224

Step-by-step explanation:

<u>Base:</u>

A = Bh

A = 8(8) = 64

<u>Sides:</u>

A = 1/2 Bh

A = 1/2 8(10)

A = 40

<u>Then you do 40(4) because there are 4 sides:</u>

40 (4) = 160

<u>Then you add up the base and the sides:</u>

160 + 64 = 224

(I think this is the right answer)

7 0
2 years ago
PLEAAASEEE HELP AND EXPLAIN ASAP
monitta
We know, widest angle is always opposite to the largest side of the triangle, as largest side is 50 here (which is backward to house) so largest angle would be opposite to it. So, that corner will be touched by  Fence A & B

"Proportionality Theorem" compares the sides of the same triangle 
Here, According to that theorem, 
ST / RS = UT / PU

If FG is an altitude, then <DFG  is an right triangle.
In short, Your Answer would be Option B

For last question here, remember, longest side must be greater than either side, and must be smaller than sum of those smaller sides.
5 0
3 years ago
Read 2 more answers
A rectangle measures 16 cm by 4 cm. It has the same area as a square. Find the perimeter of the square.
Elis [28]

ok ... in this situation... we need to find the area of the rectangle first as it is equal to the area of square .

so .... area of rectangle = l×b= 16×4

= 64 ∴area of square = 64

area of square = s×s

∴to find one side of the square ... we need to find the root of 64 = 8

∴one side = 8

now : perimeter of square : 4 × sides = 4 × 8 = 32 ║


7 0
3 years ago
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