Question

Please help me do question 21, 22 and 23. I am in 6th grade.

Answer 1

Question 21: 24 minutes

`(3)/((3)/(2) ) = (x)/(12)`

x =
`((3)/((3)/(2) ))(12)`

x = 24

Question 22: 20 centimeters

x = one side of the square

x² = 25

x = 5

4x = perimeter

4(5) = perimeter

20 = perimeter

Question 23: 17 sides

Hexagon = 6 sides

Octagon = 8 sides

Triangle = 3 sides

Total amount of sides = 6 + 8 + 3

Total amount of sides = 17