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3 years ago

The radius of a cone is 10 units and the height is 5 units. What is the volume?

Mathematics

1 answer:

kumpel [21]3 years ago

3 0

Answer:

523.6

Step-by-step explanation:

V=πr^2(h/3)=π*10^2*(5/3)=523.59878

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What is the area of sector?

Shtirlitz [24]

Answer:

Step-by-step explanation:

since 90 degrees is 1/4 of a circle, the area of the sector is 5²pi/4 = 25/4pi = 19.63

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3 years ago

Find the area of a circle if the circle is 5 m long

SpyIntel [72]

Answer:

A≈78.54

Step-by-step explanation:

A=πr2

I think this is right

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3 years ago

Express 7040 in its standard form

Romashka [77]

The answer would be 7.04^3

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3 years ago

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Akira receives the prize at the science fair for having the most informative project her trophy is in the shape of a square pyra

mina [271]

Answer:

Akira needs 45 square inches of gold foil to cover the chair free including the bottom

Step-by-step explanation:

Total surface = surface area of the base square + area of 4 triangles

Step 1: The surface area of the base square

surface area of the base = surface area of the square = $s^2$

where s is the side length

The the surface area of the base = $3^2$ = 9 square inches

Step 2: The surface area of the side triangles 

The area of the triangle = $\frac{1}{2}\times \text{side length} \times \text{slant height}$

On substituting the values,

The area of the triangle = $\frac{1}{2} \times 3 \times 6$

The area of the triangle = $\frac{18}{2}$

The area of the triangle = 9 square inches

Now the area of 4 triangles = 4 x 9 = 36 square inches

Thus the total surface area = 9 + 36 = 45 square inches

7 0

3 years ago

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Mark is installing a mosaic tile backsplash and the shape of the tiles are shaped like regular octagons. Each tile has a length

sineoko [7]

Answer:

square with sides of 6 in

Step-by-step explanation:

Tessellation is the arrangement of shapes in repeated patterns without gaps or overlapping.

Tessellation is usually done with regular polygons. Only three regular shapes can tessellate, these are equilateral triangle, regular square and regular hexagon. For other polygon to tessellate, more than one shape must be used. A octagon can be used to make tessellations if it is used together with a square.

Mark uses tiles with shape of octagon of sides 6 in. To fill the gaps, Mark have to uses a square with sides of 6 in

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3 years ago