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ipn [44]
3 years ago
11

Can someone help me out I will give out brainly

Mathematics
2 answers:
erma4kov [3.2K]3 years ago
7 0

Answer:

x = 2

Perimeter = 22 cm

Area = 21 cm²

Step-by-step explanation:

=> We know that the 2 side lengths of the given triangle are congruent, because of the congruency mark theorems, therefore to solve for x first, we can say;

6x - 4 = 8

6x = 8 + 4

6x = 12

x = 12/6

<u>x = 2</u>

Now that we know the side lengths of the triangles are 8, 8 and 6, we can find the perimeter;

Side 1 + Side 2 + Side 3 = Perimeter

8 + 8 + 6 = Perimeter

<u>22 = Perimeter</u>

Lastly to find the Area of the triangle, follow the formula of;

A = 1/2 (b * h)

A = 1/2 (6 * 7)

A = 1/2 (42)

<u>Area = 21</u>

Hope this helps!

Luda [366]3 years ago
4 0

Answer:

x = 2, P = 22 cm, A = 21 cm²

Step-by-step explanation:

The 2 legs of the triangle are congruent , then

6x - 4 = 8 ( add 4 to both sides )

6x = 12 ( divide both sides by 6 )

x = 2

perimeter = 8 + 8 + 6 = 22 cm

Area = \frac{1}{2} bh ( b is the base and h the perpendicular height )

Here b = 6 and h = 7 , then

A = \frac{1}{2} × 6 × 7 = 3 × 7 = 21 cm²

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