How to do this question plz answer my question ​

510,064,471,910,000 m² or 5.1 x 10^14 m²

Step-by-step explanation:

4πr²

if the diameter is 12742, then the radius is 6371

4π(6371)²

510,064,471.91 km²

510,064,471,910,000 m²

510064471909788 m²

Step-by-step explanation:

diameter=12742  so the radius r=12742/2=6371=6371*1000=6371000

A=4πr²

A=4π(6371000)²

A=162358564000000π =510064471909788 m²

$121.82

Step-by-step explanation:

Okay, this is kind of complex, so let's go step by step.

First, we want to find the area of the rectangular lawn - we can do this by multiplying the length and width. The length is 100 and the width is 45 so [tex]45\cdot100=4500[/tex] m² is the area of the rectangle.

However, there are 3 ponds in which the grass seeds will not be going - so we need to find the area of all 3 of these circles and subtract it from 4500 (our rectangle area).

The area of a circle is represented by the formula [tex]\pi r^2[/tex]

The diameters are given here, which is double the radius, so to find the radius of each circle let's divide the diameters by 2.

First circle's radius: [tex]20\div2=10[/tex]

Second circle's radius: [tex]10\div2=5[/tex]

Third circle's radius: [tex]5\div2=2.5[/tex]

Now let's find the area of each circle.

First Circle: [tex]\pi \cdot10^2 = \pi\cdot100=3.14\cdot100=314[/tex]

Second Circle: [tex]\pi\cdot5^2 = \pi \cdot25 = 3.14\cdot25=78.5[/tex]

Third Circle: [tex]\pi \cdot 2.5^2 = \pi \cdot6.25 = 3.14\cdot6.25=19.625[/tex]

Adding all of these values gets us 412.125.

Now we can subtract from this from 4500 to get us 4087.875

If the grass seeds that cost £1.49 cover 50m² each, then we need [tex]4087.875\div50=81.7575[/tex] bags.

Each bag costs £1.49, so the total cost is [tex]81.7575\cdot1.49\approx121.82[/tex]

Hope this helped!!

28 cm

Step-by-step explanation:

vertical side of each parallelogram is (y-6)/2 cm

perpendicular height of each parallelogram is 7 cm

Total area = 4sh

308 = 14(y-6)

y-6 = 22

y = 28 cm

BRAINLIEST PLS

40°, 95°, 105°, and 160°

Step-by-step explanation:

Let the smallest angle be x.

Measures of the 3 angles can be expressed as:

[tex]x + 55[/tex]

[tex]x + 65[/tex]

[tex]x + 120[/tex]

The sum of all angles in a quadrilateral = 360°.

Therefore, [tex](x + 55) + (x + 65) + (x + 120) = 360[/tex]

Solve for x

[tex]x + 55 + x + 65 + x + 120 = 360[/tex]

[tex]3x + 240 = 360[/tex]

[tex]3x + 240 - 240 = 360 - 240[/tex]

[tex]3x = 120[/tex]

[tex]\frac{3x}{3} = \frac{120}{3}[/tex]

[tex]x = 40[/tex]

The smallest angle = 40°

Plug in the value of x in the earlier stated expressions to find the measure of the other angles:

[tex]x + 55 = 40 + 55 = 95[/tex]

[tex]x + 65 = 40 + 65 = 105[/tex]

[tex]x + 120 = 40 + 120 = 160[/tex]

I hope this helps you!

not enough (144)

Step-by-step explanation:

First you would find the circumference of the table,

C=[tex]\pi[/tex]d

C=565.49cm

Then you find the number of guest that can fit in a table,

565.49 /70=8.078

which would be 8 guests per table

since there are 18 tables we multiply 8 to get the total guest that would fit

18*8=144

Hence, not enough

Take the information given and create an equation that add up to 360.

Step-by-step explanation:

You might assume the smallest angle to be the given 55, so that would make the third term 120+55. The fourth angle is unknown, x

The equation sets up as

55+65+(55+120)+x = 360

Add all the numbers to get 295.

295+x=360

Subtract 360-295 = x

x=65

The four angles are 55°,65°,175° and 65°

I hope this answers your question!

The total distance around the running track is 194.3 m

Step-by-step explanation:

Here, we are interested in calculating the distance around the running track.

We have two semi-circles of diameter 30m and two parallel straight lines of length 50m

Firstly let’s add the parallel straight lines, we have 50 + 50 = 100 m

Now these two semicircles when joined together gives a full circle. And since they are of same diameter, by calculating the circumference of the full circle, we can have the length around the two bends

Mathematically, that would be; πd

The circumference is thus; 22/7 * 30 = 94.29 m

Thus, the length of the running track will be 100 + 94.3m = 194.3m

£22.40

Step-by-step explanation:

60% of 12 is 7.2 (you can also write it as 7.20) so you times that by 2 to get 14.4 (you can also write it as 14.40) and [tex]\frac{1}{3}[/tex] of 24 is 8, so you add that to the 14.4 and you get 22.4 (also writen as 22.4) hope this helps!