4% of what days is 56 days

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)