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Oksanka [162]
4 years ago
8

What is the surface area of a square pyramid with a height of 12 mm and a base that measures 10 mm on each side? Round to the ne

arest square millimeter if necessary.
Mathematics
1 answer:
Darya [45]4 years ago
5 0

Answer:

360mm^2

Step-by-step explanation:

Surface area of a square pyramid= Base area + Lateral area

Base area=10mm × 10mm

=100mm^2

Lateral area = (4) × (1/2) × (10) × √(12) ^ 2 + (5) ^ 2)

= 260 mm^2

Surface area= Base area + Lateral area

=100mm^2 + 260mm^2

= 360mm^2

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Answer:

Θ = 50°

Step-by-step explanation:

Using the cofunction identity

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Given

cos40° = sin(90 - 40)° = sin50° ⇒ Θ = 50°

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4 years ago
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The diagram shows a scale drawing of a playground the scale of the drawing is 1:500 work out the perimeter of the real playgroun
liraira [26]

Answer:

Check Explanation

Step-by-step explanation:

The complete question plus diagram is presented in the attached image to this solution.

From the attached image, the dimensions of the playground drawn will be a bit variable now as zooming and some editing might have tampered with the original intended dimensions to be measured.

But still, let us assume that on measuring the rectangular playground shown, we obtain approximately that the length is 4.5 cm and the breadth is 2 cm.

The scale to convert to real life is 1;500 indicating that

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So,

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Hence, the real life dimensions of the playground is 2250 cm by 1000 cm.

In meters, that is 2.25 m by 1 m

The perimeter of a rectangular figure is given as

Perimeter = 2(Length + Breadth)

= 2(2.25 + 1)

= 6.5 m

Hope this Helps!!!

5 0
3 years ago
Solve the word problem below using the steps given in the lesson above. Show your equation and each step you take to solve it.
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Answer:

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Basile [38]

Answer:

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