2 years ago

Find the area of a circle with a diameter of 4.

1 answer:

5 0

The formula for area of a circle is (pi)*radius^2

Radius is half of diameter so the radius is 2.
2 squared is 4, then multiply by pi to get an answer of 4(pi) or 12.56.

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Four brothers each bought two hot dogs and a bag of chips at the football concession stand. If the bag of chips was $1.25, and t

IRISSAK [1]

Items bought in total:
4 brothers X two hot dogs and one bag of chips=
4X3=
12.

Hot dogs- x, chips- y.
4y + 8x= $18.20

Chips= $1.25 each so
4($1.25) + 8x= $18.20
5 + 8x= $18.20
8x= $18.20-5
8x= $13.20
x= $13.20/8 [13.20 divided by 8]
x= $1.65

This means that one hot dog= $1.65.

If you’re unsure what to write as the answer I’d suggest that you put all the working out down in your copy/notes.

3 0

2 years ago

Mary wants to fill in a cylinder vase. At the flower store they told her that the vase should be filled 3/4 for the flowers to

Alex Ar [27]

Answer:

About 376.99 cubic inches

Step-by-step explanation:

Cylinder has a volume of:

$V=\pi r^2h$

Where

V is the volume

r is the radius

h is the height

We need to find the volume of the cylinder, then multiply that answer by 3/4 to get the solution to this problem. First, the full volume of the cylinder.

Given

r = 4

h = 10

So,

$V=\pi r^2h\\V=\pi (4)^2 (10)\\V=502.65$

Now, we multiply by 3/4:

$502.65*\frac{3}{4}=376.99$

Mary should be vase to 376.99 cubic inches

4 0

2 years ago

Williams salary is £24000 his salary increases by 4% work out Williams new salary

Ad libitum [116K]

100% = 24000
50 % = 12000
10% = 2400
5 % = 1200
1 % = 240

5 0

2 years ago

i need this answer quick pleasePeter bought 10 basketball, 20 baseballs, and 11 football at the sports store. The basketball cos

zvonat [6]

157.5

$5.75 x 10 = 57.5

$2.25 x 20 = 45

$5.00 x 11 = 55

then you add all them together and you get 157.5

7 0

1 year ago

-2 equals D -7÷7 what does D equal

Elina [12.6K]

"D" = negative 1 (-1)

5 0

2 years ago