3 years ago

Someone please help me

Mathematics

1 answer:

lianna [129]3 years ago

8 0

the answer is A

you put 200 in the bank account. then wrote a check (taking out) for 20 and 30. then deposited (put in) 40

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Find the surface area in terms of pl. 3cm 4 cm A. 12π B. 16.5π C. 4.5π D. 22π

Lera25 [3.4K]

(B) 16.5π

Explanation:

The shape given is a cylinder

The height, h of the cylinder = 4cm

Diameter of the cylinder = 3cm

Radius, r = 1.5 cm

Surface area of cylinder, A = ?

We know:

Surface area of cylinder = 2πrh + 2πr²

$A = 2\pi r (h+r)\\\\A = 2 X \pi X 1.5 ( 4 + 1.5)\\\\A = 16.5\pi$

Therefore, the surface area would be 16.5π

8 0

3 years ago

PLS HELP ITS MY FINAL EXAM What is the area of the base of the cone below? A cone with height 12 feet and volume 90 feet cubed.

hoa [83]

Answer:

$A=22.5\ \text{feet}^2$

Step-by-step explanation:

We have,

Height of a cone is 12 feet

Volume of the cone is 90 feet

It is required to find the area of the base of the cone.

The base of a cone is circular in shape.

The formula used to find the volume of a cone is given by :

$V=\dfrac{1}{3}\pi r^2 h$

here, $\pi r^2=A$ (area of base of cone)

$V=\dfrac{1}{3}\times Ah\\\\A=\dfrac{3V}{h}\\\\A=\dfrac{3\times 90}{12}\\\\A=22.5\ \text{feet}^2$

So, the area of the base of the cone is $22.5\ \text{feet}^2$ .

3 0

3 years ago

A fish and game worker catches, tags, and releases 120 trout in a lake. Later, she catches 84 trout and finds tags on 30 of them

goldenfox [79]

The final answer is B because you just add all three together. Hope you get it!

5 0

3 years ago

A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probab

vivado [14]

Answer:A. The theoretical probability for pink is 95/185 or about 51.35%

B. The theoretical probability for brown is 90/185 or about 47.82%.

C. To find the experimental probability, we will make another fraction. The number of outcomes will be the numerator and the total will be the denominator.

Pink 36/69 = 52.17%

Brown 33/69 = 47.82%

Step-by-step explanation:

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3 years ago

-5x+6y-10-2x+8y+6 what is this

RoseWind [281]

Add all common factors
-7+14y-4

6 0

3 years ago

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