Question

An equilateral triangle has an altitude of 18.7cm. Find the length of the equal side.​

Answer 1

Answer:

Isotopes have the same atomic number, similar chemical properties but different atomic masses. Based on the periodic law, an isotope is an element, which must have a separate place in the periodic table. However, there are no places for isotopes in his periodic table.

Answer 2

Answer:

Step-by-step explanation:

The altitude of the triangle

=

18

inches

Let us denote the side of the triangle as

a

.

The formula for calculating the altitude of an equilateral triangle is :

Altitude

=

√

3

2

×

a

(side)

18

=

√

3

2

×

a

a

=

18

×

2

√

3

a

=

36

√

3

a

=

36

×

√

3

√

3

×

√

3

a

=

36

√

3

3

a

=

12

√

3

inches.