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a_sh-v [17]
2 years ago
15

Please help me

Mathematics
1 answer:
madreJ [45]2 years ago
7 0
143.44 degrees
Hope this helps (:
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If 10 minutes talk-time costs $2, how much will 7 minutes cost?
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What is the surface area of the triangular prism (Look at image)
8_murik_8 [283]

Answer:

\Large \boxed{\sf 384 \ m^2}

Step-by-step explanation:

Surface area ⇒ area of 2 triangles + area of 3 rectangles

(8 \times 3 \times 0.5 \times 2)+(20 \times 5 \times 2+20 \times 8)=384

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Can somebody help me?
Andreas93 [3]
The correct answer is letter D

Just believe me thats the correct answer
6 0
2 years ago
Need help thanksssssssss
Archy [21]

Answer:

Volume: 112 m³.

Surface area: 172 m².

Step-by-step explanation:

The volume is the base times height times length. So, the volume will be 2 * 8 * 7 = 16 * 7 = 112 m³.

The surface area is 2lw + 2lh + 2wh. l = 8; w = 7; h = 2.

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Hope this helps!

4 0
3 years ago
Need 78 pieces of wood 29 cm long. Boards are 6 m long. How many boards are needed?
Wittaler [7]

I believe the answer is 4 because 6m/29= 20.6897 and so then you do 20.6897 x 3= 62.0691. So 3 is too small so do 20.6897x 4= <span>82.7588. 82 >78 so the answer is that you need 4 boards.
</span>

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