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Rainbow [258]
3 years ago
8

How do I solve this problem

Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
6 0

Answer:

<h2>SA = 166 cm²</h2>

Step-by-step explanation:

We have three pairs of rectangles:

4cm × 5cm

4cm × 7cm

5cm × 7cm

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

A = l × w

l - length

w - width

Substitute:

A₁ = (4)(5) = 20 cm²

A₂ = (4)(7) = 28 cm²

A₃ = (5)(7) = 35 cm²

The Surface Area:

SA = 2A₁ + 2A₂ + 2A₃

Substitute:

SA = 2(20) + 2(28) + 2(35) = 40 + 56 + 70 = 166 cm²

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Step-by-step explanation:

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3 0
3 years ago
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const2013 [10]

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Explanation:

Given that the vessel sails 41 miles S 35° E.

We need to determine the how far south the vessel has sailed.

Let us use the Pythagorean theorem to find the distance of the vessel has sailed.

Thus, we have,

cos \ \theta=\frac{adj}{hyp}

Substituting \theta=35^{\circ} , adj=x and hyp=41

Hence, we get,

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3 years ago
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Nataly [62]

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Firdavs [7]

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Step-by-step explanation:

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