Mr. Buchanan is now homeless and wants to build a hollow equilateral trianglular pyramid to live in. What will the surface area of the pyramid be if its base side length is 28 in and its face height is 23 in?

Step-by-step explanation:

The surface area of an equilateral triangular pyramid is given as:

where

is the area of the pyramid's base

b = length of the base of one of the faces = 28 in

h = face height 23 in

The area of the base of the pyramid will be:

Hence:

The surface area of the pyramid is

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents