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frosja888 [35]
2 years ago
15

Help me to do 10(b) answer​

Mathematics
1 answer:
antiseptic1488 [7]2 years ago
3 0

Answer:

Step-by-step explanation:

Big circle:

R = radius = diameter ÷2 = 42 ÷ 2 = 21 cm

Area of big circle= πR²

                            =\dfrac{22}{7}*21*21=22*3*21\\\\\\= 1386 \ cm^{2}

Small circle:

Diameter of small circle  = radius of big circle = 21 cm

r = 21/2 = 10.5 cm

Area of small circle = πr²

                                =\dfrac{22}{7}*10.5*10.5 = 22 * 1.5*10.5\\\\\\= 346 .5 \ cm^{2}

Area of shaded region = area of big circle - area of small circle

= 1386 - 346.5

= 1039.5 cm²

                                 

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At 55 mph it will take you approximately _____ feet to stop the car. A. 5 feet B. 100 feet C. 228 feet
ololo11 [35]

Answer:

The correct answer is option C, 228 feet

Step-by-step explanation:

As per Newton’s third law of motion:

V2 – U2 = 2 x a x S

Where V = final velocity

U = Initial Vlocity

a = acceleration (-ve)

S= distance travelled

V= 0 mph

U= 55 mph = 80.6667 ft /sec

0 – (80.6667 ft /sec)2 = 2 x (-g/2) x S

S = (80.6667 ft /sec)2 /(32.2 feet per second per second x0.5)

S = 202.1 feet

So the most nearest option is option C

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3 years ago
Can you please help me solve this equation?
TiliK225 [7]

Answer: ((T/(2pi))^2)g

Step-by-step explanation: just solve for L

4 0
3 years ago
Janice needs at least $125 to buy a new bike. She already has $35 and plans to save $10 every week. If w represents the number o
Vilka [71]

Answer:

10w + 35 >= 125

Step-by-step explanation:

She saves $10m per week. That is 10w.

She already has $35, so add 35 to 10w.

10w + 35 >= 125

4 0
3 years ago
What is the value of x in this diagram?<br><br><br> Please help
marshall27 [118]
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Explanation:
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2 years ago
What is the mixed number for 24/3
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3 years ago
Read 2 more answers
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