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.

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

How are sas and sss used to show that two triangles are congruent?