3 years ago

Brainliest is waiting

Mathematics

2 answers:

lina2011 [118]3 years ago

6 0

I think it’s 70 degrees

vagabundo [1.1K]3 years ago

6 0

Answer:

61 degrees

Step-by-step explanation:

Hi, so the angles will add up to 360.

So all you need to do is take 360, and subtract 210 and 89 from it.

So:

360 - 210 - 89 = 61

I hope this helps!

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Can someone simply explain how to find the area of a triangular prism ? step by step ^^;

Vika [28.1K]

The formula:
A = bh + L (s1 + s2 + s3)

A: area
b: base
h: height
L: length
s1: side 1 (cross-sectional area)
s2: side 2 (cross-sectional area)
s3: side 3 (cross-sectional area)

Here’s an example (see attached image)

A = (4 x 6) + (12 x [7 + 7 + 4])
A = (24) + (12 x 18)
A = 24 + 216
A = 240cm^2

I hope this helped? Comment if you need more explanation or anything!