3 years ago

Lucas built a composite solid by joining 12 identical blocks, with dimensions 4 inches by 5 inches by 7 inches, into three

Mathematics

1 answer:

romanna [79]3 years ago

6 0

Answer:

the correct answer is b .

Step-by-step explanation:

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Which of the following represents the ratio of the short leg to the hypotenuse

inn [45]

I believe the answer is C

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2 years ago

5 / 4 x + 3 = x - 1 / 4

tiny-mole [99]

5/4x+3 = x-1/4
5/4x-x = -1/4-3
1/4x = -13/4
x = -13/4.4
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3 years ago

A store charges $280 for a coat. This price is 40 percent more than the amount it cost the store to buy the coat. At the end-of-

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3 years ago

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Allison lives 380 miles from her grandmother. She plans to drive to her grandmother's house for the weekend. She will drive an a

Alisiya [41]

Answer:

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Step-by-step explanation:

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3 years ago

Find the surface area of the following figure

Julli [10]

Answer:

Step-by-step explanation:

We have:

two trapezoids with bases 15ft and 7ft and height 5ft.

four rectangles 5ft × 11ft, 15ft × 11ft, 9.4ft × 11ft and 7ft × 11ft.

The formula of an area of a trapezoid:

$A_t=\dfrac{b_1+b_2}{2}\cdot h$

b₁, b₂ - bases

h - height

Substitute:

$A_t=\dfrac{15+7}{2}\cdot5=\dfrac{22}{2}\cdot5=(11)(5)=55\ ft^2$

The formula of an area of a rectangle:

$A_r=lw$

l - length

w - width

The dimensions of rectangle l × w

Subtitute:

$A_1=(5)(11)=55\ ft^2\\\\A_2=(15)(11)=165\ ft^2\\\\A_3=(9.4)(11)=103.4\ ft^2\\\\A_4=(7)(11)=77\ ft^2$

The surface area of the figure:

[tex]S.A.=2A_t+A_1+A_2+A_3+A_4\\\\S.A.=2(55)+55+165+103.4+77=510.4\ ft^2[/text]

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3 years ago