draw a semi-circle
mark in the centre O and label the horizontal radius 30
If the water level is 12 cm deep then the distance from the centre to the water level is 18 cm
draw in a radius to the end of the water level and you have a right-angled triangle, with sides 18 and r, where r is the radius of the water-level, and the hypotenuse is 30
go for it !
Water is poured into a hemispherical bowl with a radius of 30cm. The water's depth is 12cm. Calculate the radius of the surface of the water
1 answer
1 answer