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Wittaler [7]
3 years ago
15

How do you find serface area

Mathematics
2 answers:
erica [24]3 years ago
7 0

Answer:

Surface area of a rectangular prism is 2wl + 2lh + 2hw

Step-by-step explanation:

Romashka-Z-Leto [24]3 years ago
6 0

Answer:

the formula for surface area is 2(lb + bh + lh) sq  is that helps :))

Step-by-step explanation:

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worty [1.4K]

Answer:

Thank you have fun in quarantine

7 0
3 years ago
Read 2 more answers
Given triangle abc with vertices A(2,-1), B(5,6), C(-1,4) as shown. Find the number of square units in the area of triangle abs
Roman55 [17]

Answer:

The area of the triangle is 18 square units.

Step-by-step explanation:

First, we determine the lengths of segments AB, BC and AC by Pythagorean Theorem:

AB

AB = \sqrt{(5-2)^{2}+[6-(-1)]^{2}}

AB \approx 7.616

BC

BC = \sqrt{(-1-5)^{2}+(4-6)^{2}}

BC \approx 6.325

AC

AC = \sqrt{(-1-2)^{2}+[4-(-1)]^{2}}

AC \approx 5.831

Now we determine the area of the triangle by Heron's formula:

A = \sqrt{s\cdot (s-AB)\cdot (s-BC)\cdot (s-AC)} (1)

s = \frac{AB+BC + AC}{2} (2)

Where:

A - Area of the triangle.

s - Semiparameter.

If we know that AB \approx 7.616, BC \approx 6.325 and AC \approx 5.831, then the area of the triangle is:

s \approx 9.886

A = 18

The area of the triangle is 18 square units.

7 0
3 years ago
An elevator on the 10th floor goes down 9 floors. Then it goes up 19 floors, down 3, and finally down 12. What floor does it end
Ksivusya [100]
It lands on floor 5.
10-9+19-3-12
1+19-3-12
20-3-12
17-12
5
4 0
3 years ago
14 POINTS 14 Points 14 points
viva [34]

Answer:

r = 10 cm

Step-by-step explanation:

r² = 8² + 6²

r² = 64 + 36 = 100

r = 10 cm

8 0
3 years ago
Read 2 more answers
Please answer correctly !!!! Will mark BRAINLIEST !!!!!!!
Reika [66]

Answer:

g(n) = \frac{11+5n}{3}

Step-by-step explanation:

Given

3m - 5n = 11

Rearrange making m the subject

Add 5n to both sides

3m = 11 + 5n ( divide both sides by 3 )

m = \frac{11+5n}{3} , thus

m = g(n) = \frac{11+5n}{3}

4 0
3 years ago
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