Question

David made this model of a pyramid.



Which option best describes the length of the unknown side of the triangular face?

between 24 cm and 30 cm

between 4 cm and 24 cm

less than 4 cm

more than 30 cm

Answer 1

@jim_thompson5910

Answer 2

Hint:

if you have a triangle with sides x, y and z, then all of the following must be true

x+y > z

x+z > y

y+z > x

Answer 3

Basically, the sum of any two sides must be larger than the third side

Answer 4

so D?

Answer 5

the shortest that the third side can be is

14 - 10 = 4

the longest the third missing side can be is

14+10 = 24

Answer 6

so it cannot be more than 30 (otherwise, you can't form a triangle)

Answer 7

Okay so im thinking choice B

Answer 8

that's what I'm thinking too, nice work