Abowl is in the shape of a hemisphere (half sphere) with radius 10cm. the surface of the water in the bowl has a radius of 7cm. how deep is the water? give you answer to 1 decimal place.

answer:

the other way is pythagoras' theorem.

diagram as above, show radius from centre to edge of water r=10. draw the right-angled triangle. label centre to surface x. pythag.=>

x^2 = 10^2 - 7^2

=100 - 49

=51

x=sqrt(51)

h= 10 - sqrt(51)

=2.9 we get the same answer! maths is like that!

brainliest

2,600 divided by 80 = 32.5

step-by-step explanation:

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.