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3 years ago

Determine the volume and the surface area of the three dimension figure

Mathematics

1 answer:

rodikova [14]3 years ago

3 0

Answer:

Volume = 18 cm^3

Surface Area = 58 cm^2

Step-by-step explanation:

Find the volume with the formula V=w*h*l

W= width

H = height

L = length

W= 2cm

H= 1 cm

L= 9 cm

V= w*h*l

V= 2cm * 1 cm * 9cm

V= 18 cm^3

Find the surface area with the formula A= 2(w*l + h*l + h* w)

W= width

H = height

L = length

W= 2cm

H= 1 cm

L= 9 cm

A= 2(w*l + h*l + h* w)

A= 2(2cm*9cm + 1cm*9cm + 1cm* 2cm)

A= 2(29cm)

A= 58cm^2

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Please help me to solve this question.

tino4ka555 [31]

Answer:

A=266CM

Step-by-step explanation:

p=2l + 2w l=2x+1 w=x+5

66=2[2x+1] + 2{x+5] l=2x9 + 1 w=9+5

66=4x+2 + 2x+10 l=18+1 w=14

66=6x+12 l=19

66-12=6x

54=6x A=L x W

x=9 A=19 x 14

A=266CM

3 0

3 years ago

A pair of boots is 30dollars more than a pair of sandals. A pair of sandals cost s dollars each. Emily purchased 2 pairs of boot

babunello [35]

Answer: The expression representing the amount of money spent is $5x+60$ by Emily.

Step-by-step explanation:

Since we have given that

Let the cost price of per pair of sandals be 's'

Let the cost price of per pair of boots be 's+30'.

Number of pairs of boots = 2

Number of pairs of sandals = 3

Total cost would be

$2(s+30)+3s\\\\=2s+60+3s\\\\=5s+60$

Hence, the expression representing the amount of money spent is $5x+60$ by Emily.

5 0

4 years ago

Factor the trinomial (

Snezhnost [94]

Answer:

Prime.

Step-by-step explanation:

A^2+4a+12

Not factorable.

3 0

3 years ago

What is the volume of a sphere with a radius of 8 m, rounded to the nearest tenth of a cubic meter?

zlopas [31]

<h3>given:</h3>

radius= 8 m

the volume of the sphere

<h3>solution:</h3>

$v = \frac{4}{3} \pi {r}^{3}$

$v = \frac{4}{3} \times \pi \times {8}^{3}$

$v = 2144.66058 \: {m}^{3}$

$v = 2144.7 \: {m}^{3}$

therefore, the volume of the given sphere is 2144.7 cubic meters.

6 0

2 years ago

Help please. (right now i’m just filling in for the 20 characters it’s not relevant to the question)

suter [353]

Answer:

Step-by-step explanation:

We're using the Pythagorean theorem here since it's a right triangle.

a^2 (side) + b^2 (side) = c^2 (hypotenuse)

12 = a

x = b

15 = c

12^2 + b^2 = 15^2

144 + b^2 = 225

- 144 - 144 (subtracting 144 from both sides to isolate b)

b^2 = 81

$\sqrt{b^2} = \sqrt{81}$ (getting rid of the exponent by squaring both sides)

b = 9

x = 9

8 0

3 years ago