(I'm only an Year 7 so please explain clearly how you found the solution) An ice-cream dessert is made out of a cone and a scoop of ice-cream in the shape of a hemisphere placed atop the cone. If the slant edge of the cone is 100 mm and the radius of the hemisphere is 28 mm, what is the height of the ice-cream dessert from the tip of the scoop to the bottom of the cone?
I've tried to use Pythagorean Theorem to work it out but since I've only learnt how to use it to find the hypotenuse that didn't work. Then I opened a book full of formulas that I have, but I didn't find any formula about the height of the ice-cream. I finally found the answer online but it was explained in Year 10 format, so I didn't understand it. Can anyone help me? P.S. The answer is 124mm