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2 years ago

Please help (Surface area)

Mathematics

2 answers:

snow_tiger [21]2 years ago

5 0

Answer:

surface area formula of rectangular prism: L*W*H

surface area of cylinder: A=2πrh+2πr2

surface area of a cone: A=πr(r+h2+r2)

surface area of a circle: (A = π r²)

surface area of a rectangular pyramid: A=lw+l(w

2)2+h2+w(l

2)2+h2

Step-by-step explanation:

Hope this helps.

Fed [463]2 years ago

3 0

Answer:

Yes

Step-by-step explanation:

What is the problem?

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HH represents the height of the tree (in centimeters), t tt years since Renata moved in. H = 210 + 33 t H=210+33tH, equals, 210,

Jet001 [13]

Answer:

Therefore the rate of growth of the tree is 33 cm/ yr.

Step-by-step explanation:

Given that,

The height of the tree is

H= 210 +33t

Here H represent the height of tree in cm and t is time in year.

The rate of growth is the first order derivative of the H with respect to time.

i.e The rate of growth $=\frac{dH}{dt}$

∴H= 210 +33t

Differentiating with respect to t

$\frac{dH}{dt} =0 +33$

$\Rightarrow \frac{dH}{dt}=33$

Therefore the rate of growth of the tree is 33 cm/ yr.

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2 years ago

What is the area of a rectangle if 1 base is 14 in, the 2nd base is 3.5 in and the height is 8 in?

algol13

Check the picture below.

notice, we have three pair of sides, let's add them all up to get the area

$\stackrel{\textit{left and right}}{2(8\cdot 14)}+\stackrel{\textit{front and back}}{2(3.5\cdot 8)}+\stackrel{\textit{top and bottom}}{2(3.5\cdot 14)}\implies 378~in^2$

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Step-by-step explanation:

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