All categories

3 years ago

This is a pyramid problem so please help out

Mathematics

2 answers:

vampirchik [111]3 years ago

8 0

Answer:

Step-by-step explanation:

LA = 5x(1/2)x(12)xsqrt(8.26^2+20^2)

= 649.16

SA = LA + 5x(1/2)x12x8.26

= 896.96

V = 5x1/2x12x8.26x20/3

= 1652

Degger [83]3 years ago

4 0

Answer:

Step-by-step explanation:

LA, Laterial Surface Area, is the lateral surface area of a pyramid. In this case, it is the sum of five triangles with base of 12cm and height that can be calculated as follow:

height^2 = 8.26^2 + 20^2 = 468.23

height = 21.64cm

LA = 5*1/2*12*21.64

= 649.2cm^2

SA, Surface Area, is the sum of LA and base area.

Base area = 5*1/2*12*8.26 = 247.8cm^2

SA = 649.2 + 247.8 =897cm^2

Volume, V = 1/3 * base area * height

= 1/3 * 247.8 * 20

= 1652cm^3

You might be interested in

the formula for the circumference (c) of a circle is c= 2πr. calculate c if r=0.8695 mm, keeping the highest possible number of

Marianna [84]

The value of the circumference (C) of a circle, having a radius (r) = 0.8695 mm, using the formula C = 2πr, is calculated to be 5.4632296245926504416865368435231‬ mm.

A circle is a shape formed by all points in a plane that are at a particular distance from the center.

The linear distance around a circle is defined as its circumference. In other words, if a circle is opened to produce a straight line, the length of that line equals the circumference of the circle.

The formula for the circumference of a circle is given:

C = 2πr,

where C is the circumference of the circle, r is its radius, and π is a constant.

We are asked to find the circumference of the circle (C), given its radius (r) = 0.8695 mm.

Using the formula of the circumference C = 2πr, we can find the circumference as:

C = 2*π*(0.8695) mm,

or, C = 5.4632296245926504416865368435231‬ mm.

Thus, the value of the circumference (C) of a circle, having a radius (r) = 0.8695 mm, using the formula C = 2πr, is calculated to be 5.4632296245926504416865368435231‬ mm.

Learn more about the circumference of a circle at

brainly.com/question/12823137

#SPJ1

6 0

2 years ago

Three more than a number is 15

podryga [215]

Answer:

The number is 12

Step-by-step explanation:

If 15 is three more than the number is three less so you do, 15 - 3 which is 12.

I hope this helps

7 0

2 years ago

the time it takes to fly from los angeles to new york varies inversely as the speed of the plane. if the trip takes 6 hours at 9

natima [27]

Inverse variation means y=k/x (direct variation is y=kx) so we can use the info given to find the constant k

y=k/x

6=k/900

k=6(900)

k=5400 so the equation is:

y=5400/x or more accurately for this problem

t(v)=5400/v then:

t(800)=5400/800

t(800)=6.75 hours

7 0

3 years ago

Which angle is vertical <EFA

zimovet [89]

Angles that are vertical are basically neighbors that are across from each other (numbers across from each other).

Angle <CFD would be vertical to <EFA.

5 0

3 years ago

Can someone see if i did this correct? If not pls explain

Taya2010 [7]

Answer:

Not right.

Step-by-step explanation:

m <HGJ + m <KGJ =180°

So, m <HGJ = 180° - m <KGJ = 180° - 86° =94°

8 0

2 years ago