3 years ago

2 For each figure, are 21 and 22 adjacent angles or vertical angles? Explain. b. a. 2

Mathematics

1 answer:

kupik [55]3 years ago

3 0

Answer:

a is vertical and b is adjacent angles

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What is the area of the composite figure?

ivolga24 [154]

Answer:

745.4 cm^2

Step-by-step explanation:

The composite figure is made up of a rectangle 25 cm by 20 cm and a semicircle of radius 12.5 cm.

We add the two areas to find the total area.

total area = area of rectangle + area of semicircle

TA = LW + (1/2)(pi)r^2

TA = (25 cm)(20 cm) + (1/2)(3.14159)(12.5 cm)^2

TA = 500 cm^2 + 245.4 cm^2

TA = 745.4 cm^2

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3 years ago

for triangle ABC find the measure of line a b given measurement of angle a is 55 measurement of angle B is 44 and b equals 68

S_A_V [24]

Use the Law of Sines:

sin B   sin 81 sin 44
---------- = ----------- = --------------
side AC 68 side AB

Then (side AB)(sin 81) = 68(sin 44), or

   68 sin 44
side AB =   ----------------------- = 47.83 units long
sin 81

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4 years ago

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inna [77]

1. 20 squared + 48 squared = 2704
square root of 2704 is 52. Answer: 52 inches.

2. -18 squared + 82 squared = 6400
square root of 6400 is 80 Answer: 80 inches

4 0

3 years ago

A rectangle is shown. The length of the rectangle is labeled 18 inches. The width of the rectangle is labeled 6 inches.

Airida [17]

I think the answer is D.

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4 years ago

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Use the diagram and the Pythagorean Theorem to find the EXACT area of square ABCD

Burka [1]

ANSWER

The area of square ABCD is
$25 \: square \: unit$

EXPLANATION

The area of square ABCD is the square of the length of one side.

That is the area of ABCD is |AD|²

From Pythagoras theorem,

${|AD|}^{2} = { |AG| }^{2} + { |GD| }^{2}$

We can read from the graph that, each box is one unit.

This implies that,

${|AD|}^{2} = {4}^{2} + {3}^{2}$

${|AD|}^{2} =16 + 9$

${|AD|}^{2} =25$

Therefore the area of square ABCD is 25 square units.

The correct answer is option C.

5 0

3 years ago

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