3 years ago

Question for the kids orrr?

Mathematics

1 answer:

babunello [35]3 years ago

6 0

Answer:

B. 18 sq in.

Step-by-step explanation:

Surface area of the triangular pyramid excluding the base = area of the three triangular faces = 3(½ × base × height)

Where,

base = 3 inches

height = ED = 4 inches

Plug in the known values into the equation

Surface area of the triangular pyramid excluding the base = 3(½ × 3 × 4)

= 3(3 × 2)

= 3(6)

= 18 sq in.

You might be interested in

When 7/8x^2-3/4 x is subtracted from 5/8x^2-1/4x+2 the difference is?

artcher [175]

7/8x²-3/4x - 5/8x²-1/4x+2

x²/4-x+2

4 0

3 years ago

Read 2 more answers

Simplify 3 - (2 - 8). -1 9 -7 7

MArishka [77]

<span>3 - (2 - 8)
= 3 - 2 + 8
= 11 - 2
= 9

In short, Your Answer would be Option B

Hope this helps!</span>

7 0

3 years ago

Read 2 more answers

Please help

ehidna [41]

Answer:

The length between the two points is RT = 1.3 units

Step-by-step explanation:

The coordinates of the point R and T are R(2,1.2) and T(2,2.5).

Now, by DISTANCE FORMULA:

The distance between two coordinates P and Q with coordinate P(a,b) and Q(c,d) is given as:

$PQ = \sqrt{(a-c)^2 + (b-d)^2}$

So, here the distance RT = $\sqrt{(2-2)^2 + (2.5 - 1.2)^2} = \sqrt{0^2 + (1.3)^2} = 1.3$

or, RT = 1.3 units

Hence, the length between the two points is RT = 1.3 units

6 0

2 years ago

Calculate the density of a piece of<br> wood with a mass of 80g and a<br> volume of 90cm³

likoan [24]

Answer:

0.89 g/cm³

Step-by-step explanation:

used the formula d=M/V

M is mass which is = 80g

V is volume which is = 90cm³

d = 80/90

d = 0.89 g/cm³

4 0

1 year ago

Point W is located at (-5,-3).

Musya8 [376]

Answer:

(-5,2)

Step-by-step explanation:

Process of elimination

7 0

3 years ago