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pav-90 [236]
3 years ago
13

A pyramid with a slant height 4.6 in whose triangular base measures 8 in on each side.Each altitude of the base measures of 6.9

in
Mathematics
1 answer:
kvasek [131]3 years ago
6 0

Answer:

82.8 in²

Step-by-step explanation:

The surface area a triangular based pyramid :

Base area + 1/2(perimeter * slant height)

Base = 8 inches ; Slant height = 4.6 inches ; altitude of base measure = 6.9 inches

Base area of triangle :

1/2 * base * height

1/2 * 8 * 6.9

4 * 6.9

Base area = 27.6 in²

The perimeter, P = sum of sides ; (s1 + s2 + s3

P = 8 + 8 + 8 = 24 in

Hence,

Surface area = 27.6 in² + 1/2(24*4.6)

Surface area = 27.6 in² + (12 * 4.6) in²

Surface area = (27.6 + 55.2)

Surface area = 82.8 in²

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Answer:$22.50


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8 0
3 years ago
Please help, and plz don't be saying this is the right answer if u dont know for sure.
zepelin [54]

Answer:

135 degrees

Step-by-step explanation:

(8x-7)+(12x+57)=180

combine like terms

20x+50 = 180

subtract 50 on both sides

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divide by 20

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x = 6.5

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2 years ago
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Answer: 111,746 points

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48,827 + 62,919 = 111,746 total arcade points.

6 0
2 years ago
What is the slope of the line?<br><br> y = -3x + 8<br><br> slope =
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155 pages

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Hope this helps :)

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