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Nikolay [14]
3 years ago
11

Calculate the angle of a sector of 50° and a radius of 4cm

Mathematics
1 answer:
Anastasy [175]3 years ago
7 0

Answer: 20π/9 cm²

Step-by-step explanation:

Central angle is given as = 50°

We should note that for a complete circle to be made, it needs 360∘. Therefore, this is 50/360 = 5/36 of the area of a sector.

Area of the sector = 5/36 × πr².

= 5/16 × π × 4²

= 5/36 × π × 16

= 80π/36

= 20π/9 cm²

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Solution:

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Homeowners 0.08 0.20 0.24 0.52

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Total         0.12         0.46 0.42   1

Approximately what percentage of contractors prefer the glossy finish?

Answer: Percentage of contractors who prefer the glossy finish is:

\frac{0.18}{0.48}=0.375
 or 37.5\%

Therefore, the option D. 37.5% is correct

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3 years ago
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17 + 6 = 23

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3 years ago
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Lightning strikes Earth 1000 times in 10 seconds. How many seconds does it take for lightning to strike 7250 times? It takes sec
borishaifa [10]

Answer:

1000 / 10 = 100 strikes per second. Now, multiply by 12 to find the number of strikes that occurred. 100 * 12 = 1200 strikes in 12 seconds. Part B: Divide the number of seconds to the number of lightning strikes to find the average rate. 10 / 1000 = 0.1 seconds per strike. Now, multiply by 7250 to find the number of seconds that passed.

Step-by-step explanation:

8 0
3 years ago
Given the associated quantity demanded, Q1, and quantity supplied, Q2, which of the following describes the quantity Q2−Q1?
Annette [7]

Answer:

The answer is A. the surplus resulting from the price floor Pc

Step-by-step explanation:

This is because the imposition of a price floor will not cause a shortage.

6 0
3 years ago
a tabletop in the shape of a trapezoid has area an of 6,550 square centimeters. Its longer base measures 115 centimeters, and th
77julia77 [94]
To find the missing dimension of the tabletop, the height, you will use the formula for finding the area of a trapezoid and solve for the missing height.

A = 1/2 h (b1 + b2)
 6550 = 1/2 h (115 + 85)
6550 = 1/2 h (200)
<u>6550</u> = <u>100h
</u>100      100
<u>
</u>655 = h
<u>
</u>The height is 655 cm.<u>
</u>
3 0
3 years ago
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