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Leni [432]
3 years ago
8

Find the area of the region shaded in green. Use 3.14 to approximate pi.

Mathematics
1 answer:
8090 [49]3 years ago
3 0

Answer:

254 cm² (to 3 s.f.)

Step-by-step explanation:

Area of shaded region

= area of large circle -area of smaller circle

\boxed{area \: of \: circle = \pi {r}^{2} }

Radius of large circle= 15cm

Radius of smaller circle= 12cm

Area of shaded region

= π(15²) -π(12²)

= 225π -144π

= 81π

= 81(3.14)

= 254.34

= 254 cm² (3 s.f.)

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Answer:

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Step-by-step explanation:

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Answer:

<h2>x = 5</h2>

Step-by-step explanation:

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3 years ago
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The line plot shows the number of runners on a track team who won at least one gold medal.
Mandarinka [93]

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Solving a right triangle (round to the nearest tenth)
Inga [223]

Answer:

see explanation

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Subtract the sum of the given angles from 180 for A

A = 180° - (90 + 46)° = 180° - 136° = 44°

----------------------------------------------------------------

tan46° = \frac{opposite}{adjacent} = \frac{b}{23}

Multiply both sides by 23

23 × tan46° = b, thus

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cos46° = \frac{adjacent}{hypotenuse} = \frac{23}{c}

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5 0
3 years ago
PLEASE ANSWER ASAP!!! ANSWER MUST MUST MUST MMMUUUUSSSSSTTTTTT BE WITH AN EXPLANATION IN ORDER TO GET POINTS AND THE BRAINLIEST
Gelneren [198K]
V=LWH
SA=2(LW+LH+WH)
V=240
first check that they are 240 volume
multiply numbers they should equal 240

the first one (A) can be eliminated since the dimentions are the same and therefor the surface areas are the same

2nd one check so far

3rd one (C) 6*4*15=360 which is wrong so eliminate this one

4th (d) 12*6*5=360 which is not 240 so eliminate


answer is B
3 0
3 years ago
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