Identify the lateral area and surface area of a regular triangular pyramid with base edge length 14 cm and slant height 15 cm.
i already have the lateral area figured out (315), i don't understand how to get the surface area. xp i always get it wrong.

315 cm<2 399.9 cm<2

Step-by-step explanation:

L = 315 cm2 ; S = 399.9 cm2

Step-by-step explanation:

Lucky guess on my quiz!

73,205 vinyls

Step-by-step explanation:

To calculate the number of vinyls sold we need to calculate the compounded increase. To do this we simply raise the number of times that the initial value increases by the number of difference in years from the start to the current year. Then we multiply this number by the initial number of vinyl records. Since there are 4 years between 2012 and 2016, the formula would be the following...

50,000 * = x

50,000 * 1.4641 = x

73,205 = x

Finally, we can see that there will be a total of 73,205 vinyls in 2016