Identify the lateral area and surface area of a regular triangular pyramid with base edge length 14 cm and slant height 15 cm

L = 630 cm2 ; S = 484.7 cm2
L = 630 cm2 ; S = 399.9 cm2
L = 315 cm2 ; S = 484.7 cm2
L = 315 cm2 ; S = 399.9 cm2

D) L = 315 cm2 ; S = 399.9 cm2

Step-by-step explanation:

Lateral area;

3 × (½)(14)(15)

315 cm²

Surface area:

315 + (½)(14)(14)sin(60)

399.8704896 cm²

step-by-step explanation:

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: