In the diagram, what is ac?
a. 6
b. 12.33
c. 10
d. 12

The exercise is solved by applying the Pythagorean Theorem:

 h^2= a^2 + b^2 

 h= √(a^2 + b^2)

 h: hypotenuse (the opposite side of the right angle and the longest side of the triangle).

 a and b: legs (the sides that form the right angle).

 The first objective will be to find the value of AD:

 AD= AB - DB

 We don't know the DB leg, so we proceed to find it clearing it from the Pythagorean equation:

 h^2= a^2 + b^2

 a= √ (h^2 - b^2)

 a= √ (17^2 - 8^2)

 a= DB= 15

 Then, AD is:

 AD= 21-15= 6

 Once we find the value of the AD leg, we can find the hypotenuse AC:

 h= √ (a^2 + b^2)

 h= √ (6^2 + 8^2)

 h= AC= 10

 The answer is: C. 10

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.