Answer:
B
27
Explanation:
Step One
The very first step is to show that triangles ΔABC, ΔFDC and ΔGEC are similar to one another.
1. All three triangles have a right angle in them.
- ΔABC has a right angle at A
- ΔFDE has a right angle at <FDE
- ΔGEC has a right angle at <GEC
2. All three triangles have a common angle at C
3. All three triangles are similar by AA
Step Two
Find the ratios of the heights to one another.
AC / DC = 3/2
AB / DF = 3/2 The sides of similar triangles are in the same ratio.
Step Three
Find the area of ΔABC
Area ΔABC = 1/2 AB * AC
Area ΔABC = 81
Step Four
Find the Area of ΔDFC
Area of ΔDFC = 1/2 DF * DC
But DF and DC are known in terms of AB and AC
Area of ADC = 1/2 * 2/3 * AB * 2/3 * AC
Area of ADC = 1/2 * 4/9 * AB * AC
However 1/2 AB * AC = 81 so
Area ADC = 4/9 * 81 = 36
That's a very long complex step. Make sure you follow it through.
Step Five
Find the area of ΔGEC
By a similar process
EC = 1/3 AC
EG = 1/3 AB
Area ΔGEC = 1/2 * EC * EG
Area ΔGEC = 1/2 * 1/3 AC * 1/3 AB
Area ΔGEC = 1/2 * 1/9 * AB * AC
But 1/2 AB * AC = 81
Area ΔGEC = 1/9 * 81 = 9
Last Step
Find the area of the shaded area
ΔFDC - ΔGEC = Shaded area
36 -9 = 27 = shaded area
The role of oxygen in photosynthesis and in cellular respiration is: <em>Oxygen </em><em>is a product of </em><em>photosynthesis </em><em>and a reactant in </em><em>cellular respiration</em>.
<h3>What is Photosynthesis?</h3>
Photosynthesis is the process whereby green plants manufacture their food using energy from the sunlight, carbon dioxide and water to synthesize food in form of glucose and produce oxygen as a by-product.
<h3>What is Cellular Respiration?</h3>
Cellular respiration is a metabolic process in living organisms whereby glucose is broken down with the aid of oxygen, to release chemical energy.
Thus, the role of oxygen in photosynthesis and in cellular respiration is: <em>Oxygen </em><em>is a product of </em><em>photosynthesis </em><em>and a reactant in </em><em>cellular respiration</em>.
Learn more about photosynthesis on:
brainly.com/question/3529377
Answer:
The answer is A. Radiation can travel through a vacuum. So the answer is A: Radiation can't travel through a vacuum.
I hope this helps!
Explanation:
We have that force forces on a plane we Resolve to the x plane and the y plane then we derive the <em>corresponding</em> result using the equation
From the question we are told
The following forces are applied to a box.
What is the net force acting on the box?.
<h3>
Force</h3>
Net force is seen as the Difference between the force coming to and out of a <u>body</u>
Generally the equation for the Net Force is mathematically given as
Therefore
For two forces
- We Resolve to the x plane and the y plane then we derive the corresponding <em>result</em> using the equation
For more information on Force visit
brainly.com/question/26115859
