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natima [27]
4 years ago
6

Find the area of a circle with radius 7 ft.

Mathematics
2 answers:
SIZIF [17.4K]4 years ago
5 0

Answer:153.86

Step-by-step explanation:area of a circle is πr square

That is 3.14×49

=153.86

aivan3 [116]4 years ago
3 0

Answer:

153.9 ft²

Step-by-step explanation:

The area for a circle formula is πr².

Using the radius, we get:

π×7² =

49π ≈

153.938 ≈ (Using the π key)

153.9 ft²

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Identify the percent of change as an increase or a decrease. 50 pounds to 35 pounds. Find the percent of change.
Solnce55 [7]
Since it starts at 50 and goes to 35....it is a decrease since the amount is going down, or getting smaller.  To find the percent, first find the difference 50-35 = 15; then divide by the initial amount of 50.  So, 15/50 = 0.3, and then convert that to a percent by multiplying by 100.  Therefore the percent decrease is 30%
5 0
3 years ago
Read 2 more answers
Help to solve this word problem?
goldfiish [28.3K]

Let's assume

length =l

width =w

we are given

the width of a rectangle is 7 feet less than its length

so, we get

w=l-7

now, we know that

area = length*width

A=l*w

now, we can plug w

A=l*(l-7)

we have

Area=170

170=l*(l-7)

l^2-7l-170=0

now, we can factor it

(l-17)(l+10)=0

now, we can solve for l

(l-17)=0

length=17 feet

now, we can find width

w=17-7

width=10 feet

so, dimensions are

length=17 feet

width=10 feet...............Answer

5 0
3 years ago
Two angles are supplementary. The first angle has 20 degreesmore the second angle. How ma y degrees are in each angle?
Vanyuwa [196]

Answer:

100 and 80

Step-by-step explanation:

Let x = be the first angle

x-20 is the second angle

They are supplementary so they add to 180

x+x-20 = 180

Combine like terms

2x-20 =180

2x-20+20 =180+20

2x= 200

Divide by 2

2x/2 = 200/2

x= 100

The first angle is 100 and the second is x-20

x-20 = 100-20=80

The two angles are 100 and 80

3 0
3 years ago
Someone, please help me
zaharov [31]

Answer:

I dont know

Step-by-step explanation:

6 0
3 years ago
HELPPP PLSS 10 POINTS.
ch4aika [34]
The coefficient is 4
4 0
3 years ago
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