10) Two students in Mrs. Johnson's preschool class are stacking blocks, one on
top of the other. Sydney's blocks are 4 cm
high, and Maddy's blocks are 9 cm high.
How tall will their stacks be when they are.
the same height for the first time?

why are you giving so many marks make your marks less and make a question list so that i can understand your question very nicely

english maybe i can ..

this is a good question! i’ll do some research and what i find, i’ll contact you asap when i have something! ✊

arc length = 6.63311 ft.

step-by-step explanation:

the formula the arc measure is:

arc length s=2πr(c)/360

where:

c   is the central angle of the arc in degrees

r   is the radius of the arc

π   is pi, approximately 3.142

using the above formula we get

s =

thus we find that arc length of an arc for a circle of radius 20 feet and central angle 19 degrees is

6.63311 feet