2 years ago

What is the exact area of a circle having diameter 3 in.?

Mathematics

1 answer:

boyakko [2]2 years ago

8 0

Answer:

2.25π square inches

Step-by-step explanation:

Area = π $r^{2}$

Diameter = 2r

So in this case, radius = 1.5 inches

Plugging that into the area formula produces the answer

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Gavin goes to the market and buys one rectangle shape board. The length of the board is 16 cm and width of board is 10cm . If he

Elanso [62]

Answer:

280cm squared

Step-by-step explanation:

By adding a 2cm wooden board, Gavin is adding 4 cm to each side, os the new sides would be 14 and 20. 14*20=280 cm squared.

7 0

3 years ago

if x/b-c=y/c-a=z/a-b, prove that x+y+x=0.please help me ... this is my homework. I will follow you plz . anyone.

irinina [24]

Answer:

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2 years ago

Which expressions are equivalent to -56z + 28.

NeX [460]

Answer:

B and C

Step-by-step explanation:

(-7)•8z = -56z

(-4)•(-7)=28

and

40•(-1.4)= -56z

40•0.7= 28

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2 years ago

Find the slope between these two points: (5,0) and (-1,12)

Ede4ka [16]

The slope of this function is -2

7 0

2 years ago

X-2y=18 2x+y=6 parallel perpendicular or neither

sergey [27]

<h3>Therefore they are perpendicular.</h3>

Step-by-step explanation:

A equation of line is

y =mx +c

Here the slope of the line is m.

Given equations are

x - 2y = 18

⇔-2y = -x +18

$\Leftrightarrow y =\frac{1}{2} x -9$ ............(1)

and 2x + y = 6

⇔y = -2x +6 ............(2)

Therefore the slope of equation (1) is $(m_1)$ = $\frac{1}{2}$

Therefore the slope of equation (2) is $(m_2)$ = -2

If two lines are perpendicular, when we multiply their slope we get -1.

therefore,

$m_1. m_2$ = $\frac{1}{2}$ . (-2) = -1

Therefore they are perpendicular.

4 0

2 years ago