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2 years ago

Please help me please i really need help please help me

Mathematics

1 answer:

Delicious77 [7]2 years ago

5 0

Answer:

The formula of the volume of a cylinder is known as follow

Where

π is 3,14 or 22/7.

d (diameter) is a straight line segment that crosses a center and connects two points on the circle.

r is the radius of the to part of the cylinder.

h is the height.

we can subsitute to our formula knowing that

d = 4cm (turn to r = <em>2cm</em>,because the formula use r) ; h = 11cm

V = πr²h

= 3,14 × 2² × 11

= 3,14 × 4 × 11

= 3,14 × 44

= 138,16 rounded off (138,2cm3) result

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4 0

2 years ago

Place the following in order from least to greatest. 8,000,000 mm, 5 km, 7000,000 cm, 6,000 m

Nutka1998 [239]

Answer: 5km, 6000m, 8,000,000 mm, 7000000 cm

Step-by-step explanation:

Note that:

1km = 1,000,000mm

1m = 1000mm

1cm = 10mm

Therefore,

5 km = 5 × 1,000,000mm = 5,000,000mm

7000,000 cm = 7,000,000 × 10 = 70,000,000mm

6,000 m = 6000 × 1000 = 6,000,000mm

Therefore, from the least to the greatest will be:

5km, 6000m, 8,000,000 mm, 7000000 cm

5 0

2 years ago

Sasha is 8 years than ei. the sum of their ages is 14. find the ages os sasha and rei

snow_lady [41]

Answer:

<h2><u><em>Rei 3 years old</em></u></h2><h2><u><em>Sasha 11 Years old</em></u></h2>

Step-by-step explanation:

sasha is 8 years than ei. the sum of their ages is 14. find the ages os sasha and rei

(14 - 8) : 2 = 3 (Rei)

8 + 3 = 11 (Sasha)

------------------

11 + 3 = 14

the answer is good

6 0

2 years ago

I forgot how to do this. Can anyone help me please

Svetach [21]

Answer:

Step-by-step explanation:

180 since it is supplementary

then minus 100 which is 80 then minus 12 which is 68 then half that which is 34

7 0

1 year ago

Read 2 more answers

Hello!

avanturin [10]

Answer:

7.71 km²

Step-by-step explanation:

<u>Area of triangle:</u>

A = 1/2bh

We have the value of b but not h.

Added auxiliary segments which help to find the value of h.

<em>See attached for details</em>

sin 40° = h/4
h = 4 sin 40°
h = 2.57 km

A = 1/2*6*2.57 = 7.71 km²

6 0

2 years ago

Read 2 more answers