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aliina [53]
3 years ago
11

The surface area of a cone is found using the formula SA = Pir2 + Pirl. Describe what each part of the formula represents and ho

w these parts are used to calculate the surface area.

Mathematics
2 answers:
N76 [4]3 years ago
6 0

Answer:

<em><u>hope</u></em><em><u> </u></em><em><u>it</u></em><em><u> </u></em><em><u>will help uh</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

Bess [88]3 years ago
5 0

Answer:  the first part is the area of the base:  πr²

You take the radius given, (or half of the diameter given) square that and multiply by the value of Pi, commonly 3.14 or 3.1416  

The second part is the area of the lateral surface. πrh That is the radius times π times the height of the cone.

Step-by-step explanation:

The formula as shown is confusing to me. It is better to show exponents with superscript if possible, or use the caret ^ [shift + 6] on a keyboard before the 2.

The second part is the area of the lateral surface. πrh That is the radius times π times the height of the cone. (using h instead of l seems less confusing as lower case L looks like 1 in some fonts) But people do use<em> πrl  </em>I realize.

Add the two surface areas together to get the total surface area of the cone.

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A jewelry maker has 24 jade beads and 30 teak beads.What is the greatest number of necklaces she can make? How many beads of eac
gulaghasi [49]

Jewelery maker has

24 jade beads

30 teak Beads

She has to make necklaces with each necklace having the same number of beads

So we need to find the highest common factor for both 24 and 30

The factors for both numbers are as follows

24 -1,2,3,4,6,8,12,24

30 - 1,2,3,5,6,10,15,30

The highest common factor for both is 6

The greatest number of necklaces she can make is 6

Number of jade beads - 24/6 = 4 jade beads

Number of teak beads - 30/6 = 5 teak beads

So each necklace will have 4 jade beads and 5 teak beads

6 0
3 years ago
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What does y=-1/2x-4
Anvisha [2.4K]

Answer:

y = -1/2x - 4

From this, you can tell it's in slope-intercept form, has a slope of -1/2, and a y-intercept of -4.

I've included a picture of what this equation looks like.

5 0
3 years ago
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mario delivers pizzas, he is paid 65p for each pizza he delivers, one day he was paid 27.30 for delivering pizzas, how many pizz
ipn [44]
So 27.39 divided by 0.65 is 42
6 0
3 years ago
Please answer this i have tried lots of answers but they are all wrong urgent
Wittaler [7]

(a). All four sides are equal and the angles are right-angled (90 degrees).

(b). A quadrilateral has no pairs of parallel sides is a Kite and irregular trapezium.

(c). A triangle having one pair of equal sides and one pair of equal angles is an isosceles Triangle.

<h3>What is geometry?</h3>

One of the first areas of mathematics is geometry, along with arithmetic. It is focused on spatial characteristics that relate to the proximity, size, shape, and relative placement of objects.

(a). Two features that make the shape square are all four sides equal and the angles are right-angled (90 degrees).

(b). A quadrilateral has no pairs of parallel sides is a Kite and irregular trapezium.

(c). A triangle having one pair of equal sides and one pair of equal angles is an isosceles Triangle.

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7 0
1 year ago
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kiran and clare live 24 mile away from each other along a rail trail. One Saturday the two friends started walking toward each o
scZoUnD [109]

Answer:

11:45\ am

Step-by-step explanation:

Total distance between Kiran and Clare is 24 miles. They started walking at 8.00 am.

Speed of Kiran is 3 miles/hr and speed of Clare is 3.4 miles/hr.

So the relative speed of them is,

=3+3.4=6.4 miles/hr

Both the speed are added as they moving in opposite direction.

We know that,

\text{Relative speed}=\dfrac{\text{Relative distance}}{\text{Time}}

i.e \text{Time}=\dfrac{\text{Relative distance}}{\text{Relative speed}}

Putting the values,

t=\dfrac{24}{6.4}=3.75\ hr=3\ hr\ 45\ min

As they started at 8.00 am, so the time at which will meet will be,

=8+3\ hr\ 45\ min=11:45


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3 years ago
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