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2 years ago

Need help with these 2 questions as soon as possible thank you

Mathematics

1 answer:

earnstyle [38]2 years ago

8 0

Answer:

2w+2+w=3w-1+6=4w=2w=2w

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For the figures below, assume they are made of semicircles, quarter circles and squares. For each shape, find the area and perim

ICE Princess25 [194]

Answer:

Part a) The area of the figure is $\frac{9}{2}(4+\pi )\ cm^{2}$

Part b) The perimeter of the figure is $3(2+2\sqrt{2}+ \pi)\ cm$

Step-by-step explanation:

Step 1

Find the area of the figure

In this problem we have that

The figure ABC is the half of a square and the other figure is a semicircle

<u>Find the area of the figure ABC</u>

we have

$AB=6\ cm, BC=6\ cm$

The area of the half square ABC is equal to find the area of triangle ABC

$A1=\frac{1}{2}*6*6=18\ cm^{2}$

<u>Find the area of the semicircle</u>

The area of the semicircle is equal to

$A2=\pi r^{2}/2$

we have that

$r=6/2=3\ cm$

substitute

$A2=\pi (3)^{2}/2$

$A2=(9/2) \pi\ cm^{2}$

The area of the figure is equal to

$18\ cm^{2}+(9/2) \pi\ cm^{2}= \frac{9}{2}(4+\pi )\ cm^{2}$

Step 2

Find the perimeter of the figure

The perimeter of the figure is equal to

$P=AB+AC+length\ CB$

we have

$AB=6\ cm$

Applying Pythagoras theorem

$AC=\sqrt{6^{2}+6^{2}}\\AC=6\sqrt{2}\ cm$

Remember that

the circumference of a semicircle is equal to

$C=\frac{1}{2}2\pi r=\pi r$

$r=6/2=3\ cm$

$C=\pi(3)$

$C=3 \pi\ cm$

The perimeter of the figure is equal to

$P=6\ cm+6\sqrt{2}\ cm+3 \pi\ cm$

Simplify

$P=3(2+2\sqrt{2}+ \pi)\ cm$

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3 years ago

How to do this? or get this started?

Ne4ueva [31]

You're right on what you've been doing

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3 years ago

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Which values for x and y make the statement (x + 3)(y - 11) = 0 true?

Westkost [7]

A,C,and D are all correct

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a 12 foot long ladder reaches a point 6 feet high on a house. What angle does the ladder form with the house?

RSB [31]

Answer:

Step-by-step explanation:

77 feet is the answer hope you mark me brainlyist

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3 years ago

Justine made 3 loaves of banana bread.

Radda [10]

Answer:

3/5 of a serving. Or 6/10. Since he doesn't have a whole serving.

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2 years ago

Need help with these 2 questions as soon as possible thank you​

Need help with these 2 questions as soon as possible thank you