How many ounces of gold are in aa 1414-karat gold chain that weighs 2.52.5 ounces?
2 answers:
Solution:
we have been asked to find
How many ounces of gold are in aa 14-karat gold chain that weighs 2.5 ounces?
14 -Karat Gold means 14 parts of gold in the 24 parts of the Gold chain.
So the ratio of pure gold is
So the pure gold in 2.5 ounces of gold chain can be given as below
Hence there is 1.5 Ounce of pure gold in the 14-karat gold chain that weighs 2.5 ounces.
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Given:
In circle P, m∠ADB is 25°.
To find:
The m∠APB.
Solution:
Central angle theorem: According to this theorem, the central angle of an arc is twice of inscribed angle of the same arc.
From the given figure it is clear that the ∠APB is the central angle and ∠ADB is the inscribed angle on the arc AB.
By using the central angle theorem, we get
Therefore, the correct option is D.