Which of the two solids below are similar ?

a. i and ii
b. i and ii
c. ii and ii
d. i, ii and i
e. none of the solids are similar.

 I and II.

Step-by-step explanation:

By definition, two solids are similar if their corresponding sides are in the same ratio.

Knowing this, let's find which solids are similar:

Corresponding sides ratio of solids I and II:

Corresponding sides ratio of solids I and III:

Corresponding sides ratio of solids II and III:

 You can observe that the solids  I and II are similar.

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2