The base edge of the regular triangular pyramid is b=10 cm and altitude of the base hb ≈ 8.66 cm. the slant height of the pyramid is k=8 cm. find:

lateral area of the pyramid

The lateral area of the pyramid is

Step-by-step explanation:

we know that

The lateral area of the pyramid is equal to the area of its three triangular lateral faces

so

where

------> the slant height

substitute the values

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart