V=1/3pi X^2(3r-X)
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convex lens(converging lens)
Because the 2cm lens has 4 times the area of a 1cm lens. (area = Pi*r2)
stroke volume =end diastolic volume - end of systalic volume. But how to measure these volume i don't know?
volume as in TV volume or volume as in books. Answer 2 Volume often just means 'amount' as in 'a large volume of sales'. Also, the volume of a container is a measure of how much 'stuff' it can hold. The volume of a room is length x width x height. The volume of a sphere is 4/3 x pi x radius^3
lower power= 20 x 10= 200x higher power= 20 x 43= 860x