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salantis [7]
3 years ago
14

Can someone help me please.​

Mathematics
1 answer:
Daniel [21]3 years ago
6 0

Answer:

<h2>652 ft²</h2>

Step-by-step explanation:

Look at the picture.

It's a net of right rectangular prism.

We have three pairs of rectangles:

7ft × 8ft

7ft × 18ft

8ft × 18ft

The formula of an area of a rectangle l × w:

A = lw

Calculate the areas:

A₁ = (7)(8) = 56 ft²

A₂ = (7)(18) = 126 ft²

A₃ = (8)(18) = 144 ft²

The Surface Area :

S.A. = 2A₁ + 2A₂ + 2A₃

Substitute:

S.A. = 2(56) + 2(126) + 2(144) = 652 ft²

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Alex_Xolod [135]

Answer:

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Step-by-step explanation:

to obtain the first four terms substitute n = 2, 3, 4 into the recursive formula

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f(4) = f(3) + 7 = 9 + 7 = 16

common difference d = 16 - 9 = 9 - 2 = 2 - (- 5) = 7



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3 years ago
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Answer:

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From the figure attached,

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6x + 42x = 1344

48x = 1344

x = \frac{1344}{48}

x = 28 units

Therefore, Option (A). x = 28 units will be the answer.

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