15 is an exact number. It is a precise number.
1 metre = 100 cm Therefore 15 meters = 15*100 = 1500 cm
8.43175853 feetWould that level of accuracy be justified by the precision of the measurement of 257 cm, or the conversion factor?
The length of the diameter will be 30 cm if the radius is 15 cm.
4*15 cm = 60 cm
Area = 15*15 = 225 sq cm
14
15 cm + 7 cm = 22 cm
NO ! You cubed the 'cm' part OK. Why did you not also cube the '15' part ? Look at this: You have a cube, 15 cm on each side. What is its volume ? Length = 15 cm Width = 15 cm Height = 15 cm Volume = (Length) x (width) x (height) (15 cm) x (15 cm) x (15 cm) = 3,375 cm3 An even slightly better way to look at it: (15 cm)3 = (15)3 x (cm)3 = (3,375) (cm3)
15 cm = 5.90551 "15 cm = 5.90551 "15 cm = 5.90551 "15 cm = 5.90551 "15 cm = 5.90551 "15 cm = 5.90551 "
If that is the side length, just multiply 15 cm x 15 cm x 15 cm.
15 feet = 457 cm
If the radius of a circle is 15 cm, the circumference is: 94.2 cm
Use Pythagoras: diagonal² = length² + width² → diagonal² = (10 cm)² + (15 cm)² → diagonal = √(10² + 15²) cm = √325 cm = 5 √13 cm ≈ 18 cm
1 metre = 100 cm Therefore 15 meters = 15*100 = 1500 cm
15 feet is 457.2 cm
8.43175853 feetWould that level of accuracy be justified by the precision of the measurement of 257 cm, or the conversion factor?
15 cm * 6 sides = 90 cm perimeter