All categories

3 years ago

Find the perimeter and area of this shape: please answer me

Mathematics

1 answer:

Delicious77 [7]3 years ago

3 0

Answer:

perimeter = 32.28 cm

area = 47.7 cm²

Step-by-step explanation:

perimeter = sum of the lenght of the sides of the shape

and because we have a hollow in the shape that looks like a half a circle we will get the circumfrence of that part and add it to the rest

lets find the circumfrence or perimeter of the semi-circle first

6-(1+1)= 4

formula of a circle = πd = 3.14 x 4 =12.56

because its half a circle we divide by 2

12.56/2 = 6.28

perimeter = 1+6.28+1+9+6+9=32.28

because this shape look s like a rectangle we will find the area of the whole shape then subtract from the area of the semi-circle because it is a cut out

6 x 9 -(1/2πr²/)

54 - (1/2x3.14 x2x2)

54-6.28

area = 47.72cm²

Hope this helps and if it does mark as brainliest pls.thx

You might be interested in

Find the exact values of cos 3 pi/4 radians sin 3 pi/4 radians.

Liula [17]

If you consult the unit circle, you will see that:

$cos(\frac{3\pi}{4}) = -\frac{\sqrt{2}}{2}\\\\sin(\frac{3\pi}{4}) = \frac{\sqrt{2}}{2}$

3pi/4 in degrees is 3pi/4 * 180/pi = 3/4 * 180 = 135 degrees. And please refer to the attachment to how you can obtain the values above.

Now, lets multiply it together.

$-\frac{\sqrt{2}}{2} \cdot \frac{\sqrt{2}}{2} =\\\\-\frac{2}{4} =\\\\ \boxed{\bf{-\frac{1}{2}}}$

So, <span>cos(3pi/4)sin(3pi/4) = -1/2</span>

7 0

3 years ago

Whats the difference between 4x and x4

NNADVOKAT [17]

4x is substitution and x4 is to multiply. hope that helped

4 0

3 years ago

PLEASE HELP!!! Which equation applies the associative property of multiplication?

almond37 [142]

The last one. Number 4

7 0

3 years ago

Which set of ordered pairs has point symmetry with respect to the origin (0, 0)?

Leya [2.2K]

Answer:

(-8, 3), (8, -3)

Step-by-step explanation:

Point symmetry about origin means reflection of the given point about the origin.

The reflection of a point about the origin will cause the 'x' and 'y' value of the point to change its sign.

Therefore, the coordinate rule for point symmetry about the origin is given as:

$(x,y)\to (-x,-y)$

Now, let us check each of the given options.

Option 1:

(-8, 3), (8, -3)

Now, if (x, y) = (-8, 3), then its point symmetry is given as (-(-8), -3) = (8, -3)

So, option 1 is correct.

Option 2:

(-8, 3), (-3, 8)

Now, if (x, y) = (-8, 3), then its point symmetry is given as (-(-8), -3) = (8, -3) ≠ (-3, 8)

So, option 2 is not correct.

Option 3:

(-8, 3), (-8, -3)

Now, if (x, y) = (-8, 3), then its point symmetry is given as (-(-8), -3) = (8, -3) ≠ (-8, -3)

So, option 3 is not correct.

Option 4:

(-8, 3), (8, 3)

Now, if (x, y) = (-8, 3), then its point symmetry is given as (-(-8), -3) = (8, -3) ≠ (8, 3)

So, option 4 is not correct.

Hence, only option 1 is correct.

5 0

3 years ago

Solve log x = 3. (2 points)

Lemur [1.5K]

Answer:

x=1000

Step-by-step explanation:

log x = 3

log10 ( x) = 3

Raise each side to the power of 10

10^( log10 ( x)) =10 ^3

x = 10 ^3

x = 1000

4 0

3 years ago

Read 2 more answers

Find the perimeter and area of this shape: please answer me​

Find the perimeter and area of this shape: please answer me