3 years ago

Find the area of the regular 30-gon with radius 10 mm.

Mathematics

1 answer:

Irina-Kira [14]3 years ago

4 0

Answer:

This polygon is comprised of 30 congruent triangles, each with a central angle of 12°

And using trig, each has an area of......

(1/2)(20)^2 sin(12°) = 41.5823381636 sq ft

So, 30 times this = 1247.470144908 sq ft = 1247.5 sq ft (rounded to the nearest tenth)

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A taxi driver makes $24.50 in an hour, but uses $6.75 worth of gas during that time. What will the driver's total earnings for t

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3 years ago

The family room in Zacks home is 6.5 ft by 9 ft.The floor in the room is 10 by 12 ft.how much area of the floor is not covered b

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3 years ago

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Find m ab Find m acb

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3 years ago

Three cartons of juice cost $4.77? find the cost of 8 cartons

AleksAgata [21]

Note: Make the rule of three simple

cartoons __ price $
3 --------------- 4.77
8 --------------- y

Solving: (directly proportional)

$\frac{3}{8} = \frac{4.77}{y}$
Product of extremes equals product of means
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$3y = 38.16$
$y = \frac{38.16}{3}$
$\boxed{\boxed{y = 12.72}}\end{array}}\qquad\quad\checkmark$

Answer:
The price of eight cartoons was $\$\:12.72$

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3 years ago