Whats the approximate area of a segment of a circle with a height 6m and the lenght of the chord is 20m

What aspects of lines have to be diffrent

Which of the following is the shape of a cross section of the figure shown below

You’re ordering more thread for blue jeans co. you usually purchase from ted’s threads, which sells 12 thread spools for $27. you recently received a notice from wade's wares that says you can buy thread from them for $2.30 each for the first 2 dozen and $2 a spool thereafter. you need to order 5 dozen spools. what percentage can you save by going with wade’s wares?