62. A building is in the form of a cylinder surmounted by a hemispherical vaulted dome and contains 10
51
m of air. If the internal diameter of dome is equal to of the total height above the floor,
21
5
Find the height of the building.

1 3 5

step-by-step explanation:

i took the test: )

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.

the answer is b

10

step-by-step explanation: