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3 years ago

The answer to all of these problems

Mathematics

1 answer:

-BARSIC- [3]3 years ago

4 0

1) area of a cicular pool
area of a circle=πr^2 d=2.5 then r=2.5/2
A=3.14 *(2.5/2)^2
A=4.906m^2 A=4.9m^2

2) arae of a coin
(if i read it right d=15mm?)
A=πr^2 d=15 then r=15/2
A=3.14*(15/2)^2 =176.6mm^2

Rest all are same problems u try to solve it

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Find the perimeter of a triangle with vertices A(3, 1), B(2, -1), and C(-3, 2). Leave

natulia [17]

The perimeter of triangle is: 14.15 units

Step-by-step explanation:

First of all we have to find the lengths of sides of triangles

Given

A(3, 1), B(2, -1), and C(-3, 2)

The distance formula will be used to find the lengths of sides

$d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\$

So,

$AB = \sqrt{(2-3)^2+(-1-1)^2}\\=\sqrt{(-1)^2+(2)^2}\\=\sqrt{1+4}\\=\sqrt{5}\\=2.24\ unitsBC = \sqrt{(-3-2)^2+(2+1)^2}\\=\sqrt{(-5)^2+(3)^2}\\=\sqrt{25+9}\\=\sqrt{34}\\= 5.83\ units\\AC = \sqrt{(-3-3)^2+(2-1)^2}\\=\sqrt{(-6)^2+(1)^2}\\=\sqrt{36+1}\\=\sqrt{37}\\=6.08\ units$

The perimeter of triangle will be:

$P = AB+BC+AC\\= 2.24+5.83+6.08\\=14.15\ units$

Hence,

The perimeter of triangle is: 14.15 units

Keywords: Triangle Perimeter

Learn more about perimeter at:

#LearnwithBrainly

7 0

2 years ago

SOMEONE DO NUMBER 1 FOR ME IM RUSHING. GIVING BRAINLIEST!!

MrRissso [65]

Answer:

Step-by-step explanation:

Mixed number Improper fraction

a) 1 + 1 + 1/3 = $2\frac{1}{3}$ 7/3

b) 1 + 1 + 1 + 5/8 = $3\frac{5}{8}$ 29/8

c) 1 + 1 + 1 +2/4 = $3\frac{2}{4}$ 14/4

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2 years ago

Tony has 6 dollars in change in his car. Every time he drives to visit his grandma, he pays $1.25 in tolls. Which graph represen

olga_2 [115]

After paying 4 tolls, Tony will have 4×$1.25 = $5.00 less change in his car. At that point, he will have $1 in change. The appropriate choice is
graph of line going through (0, 6) and (4,1)

5 0

3 years ago

Read 2 more answers

a paint mixture contains 32 gallons of base for every gallon of color. In 924 gallons of paint, how many gallons of color are th

expeople1 [14]

base and color are in a ratio of 32:1, where color is "x"
924-x/x=32/1
924-x=32x33x=924

x = 28 (gallons of color)

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3 years ago

Is 3 to the negative 1 power times 3 to the negative 1 power equal to 3 to the 1 power?

iren2701 [21]

To make the exponent positive, make a fraction. 1/3 * 1/3. This is 0.1 repeating. 3^1 is 3. So the answer is no.

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3 years ago