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3 years ago

What is the surface area of the solid that this net can form?

Mathematics

1 answer:

vovangra [49]3 years ago

7 0

you just find the surface area for each rectangle/square and then add them together

5x8=40

25x5=125

8x25=200

5x25=125

8x25=200

add those numbers and you get 730 :)

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What is the ‘r’ value of the following sequence: 6, 18, 54, 162…?

goblinko [34]

R = 3
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3 years ago

What is the area of this triangle?

Vinil7 [7]

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3 years ago

Given:

oksian1 [2.3K]

Answer:

9 units

Step-by-step explanation:

By the midsegment theorem,

$AB=\dfrac{KN+LM}{2}$

Since the ratio $LM:KN=1:5,$ then $LM=x,\ KN=5x$ and

$18=\dfrac{x+5x}{2}\\ \\18=\dfrac{6x}{2}\\ \\18=3x\\ \\x=6\\ \\LM=6\ units\\ \\KN=30\ units$

Draw two heights LE and MF. Quadrilateral ELMF is a rectangle, then EF = LM = 6 units.

Trapezoid KLMN is isosceles trapezoid (KL = MN), then KE = FN and

$KE=FN=\dfrac{KN-EF}{2}=\dfrac{30-6}{2}=12\ units$

Consider right triangle KLE. By the Pythagorean theorem,

$KL^2=LE^2+KE^2\\ \\15^2=LE^2+12^2\\ \\LE^2=15^2-12^2\\ \\LE^2=225-144=81\\ \\LE=9\ units$

3 0

3 years ago

What is 0.25% of 137

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Answer:

0.342

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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2 years ago