This figure is a tetrahedron. What is the area of its base? 62.4 square units
36 square units
124.8 square units
22.4 square units

Surface area of Tetrahedron is 62.4 square units.

Note:(This is for only one surface of Tetrahedron)

Step-by-step explanation:

Given :

The shape is Tetrahedron.

length of Base = 12 unit.

length of Height = 10.4 unit

To Find :

Surface area of Tetrahedron = ?

Solution:

Tetrahedron:

It is a polyhedron composed of

4 Triangular faces, ( four triangular surface)

6 Straight edges, and

4 Vertex corners.

Base Shape: Triangle

Side Shape: Triangle

We need to find surface area of Tetrahedron

Therefore, one side surface area of Tetrahedron is 62.4 square units.

If we required total surface area of the Tetrahedron then it will be multiplied by four, because it has 4 surface or 4 face.

Total surface area of Tetrahedron = 4 × 62.4

                                                        = 249.6 square units

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!

answer: (1,3) (3,-1) (5,-5) ?

step-by-step explanation: