This composite figure is made of two identical pyramids attached at their bases. each pyramid has a height of 2 units which expression represents the volume, in cubic units, of the composite figure?

answer: the volume of the composite figure made of two identical pyramids attached at their bases is:

third option 2 [ (1/3)(5)(0.25)(2) ]

solution:

volume of the composite figure: v=?

the composite figure is made of two identical pyramids attached at their bases, then:

v=2 vp

volume of each pyramid: vp

vp=(1/3) ab hp

area of the base of the pyramid: ab

height of the pyramid: hp=2

base of each pyramid is a rectangle with dimensions b=5, h=0.25

ab=bh→ab=(5)(0.25)

replacing in the formula of vp:

vp=(1/3)     ab       hp

vp=(1/3) (5)(0.25) (2)

replacing in the formula of v:

v=2 vp

v=2 [ (1/3)(5)(0.25)(2) ]

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

no solution

step-by-step explanation:

there is not enough information in the problem to solve.