What is orthcentre?

How many liters of wine can be held in a wine barrel whose capacity is 26.0 gal. (1 gal 4 qt 3.7854 L) How many significant figures should your answer have? How much is 26500000 in million? Who is father of trigonometry? What is 51 over 7 as a mixed number? What does the fraction one and one one equal? What is 19 times 38? What does an rhombus equal to? What is standard form in base ten blocks? What is 82 73? What is the number in scientific notation 0.0765? What was the full name of Magnum PI? How much is 435? How many factors does 20 have and what are they? What percent of 40 is 19.50? Is water tank a cuboid? What is the mass of the earth in cubic miles? What are other words for estimate? What is 13 hundredths less than 9.792? What is an example of of a situation where a zero is not considered to be a significant digit? What is 16 times 2 equal?