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3 years ago

Surface Area of Pyramids

Mathematics

1 answer:

iren [92.7K]3 years ago

4 0

9514 1404 393

Answer:

288 km²

Step-by-step explanation:

The surface area is the sum of the area of the square base and the area of the four triangular faces.

SA = (10 km)² + 4(1/2)(10 km)(9.4 km) = 288 km²

____

The area formulas for a square and a triangle are ...

A = s² . . . . area of a square of edge length s

A = 1/2bh . . . . area of a triangle with base b and height h

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3 years ago

What values make the inequality v<4 true.

VLD [36.1K]

Answer:

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Step-by-step explanation:

4 is exculded because its u<4 not u<=4

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3 years ago

A regular polygon is inscribed in a circle of radius 11 cm. Calculate the perimeter of the polygon to the nearest tenth if the p

Oduvanchick [21]

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7 0

3 years ago

Easy question i will mark braineliest

Yuki888 [10]

Answer:

Step-by-step explanation:

$5(y - 3.8) = 4.7(y - 4)$

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$5y - 19 = 4.7(y - 4)$

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$5y - 19 = 4.7y - 18.8$

Move ' 4.7 y ' to L.H.S and change it's sign

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Move constant to R.H.S and change it's sign

$5y - 4.7y = - 18.8 + 19$

Collect like terms

$0.3y = - 18.8 + 19$

Calculate

$0.3y = 0.2$

Divide both sides of the equation by 0.3

$\frac{0.3y}{0.3} = \frac{0.2}{0.3}$

Calculate

$y = 0.67$

Hope this helps...

Best regards!!

3 0

3 years ago

Read 2 more answers

PLEASE HELP EASY MATH!! NO LINKS! NEED FULL EXPLANATION!! (WILL GIVE BRAINLYIST!)

LenaWriter [7]

Answer:

Step-by-step explanation:

2x3 is 6x4 is 24+5 is 29

6+20 is 26

9x5 is 45

6+8 is 14x5 is 70

SO THIS MEANS THAT B IS YOUR ANSWER

4 0

3 years ago