Acircle is centered at the point (-7, -1) and passes through the point (8, 7).

the radius of the circle is units. the point (-15, ) lies on this circle.

The radius of the circle is 17 units. The point (-15,-16) or (-15,14) lies on this circle.

Step-by-step explanation:

It is given that the circle is centered at the point (-7, -1) and passes through the point (8, 7).

Distance formula:

Using distance formula we get,

The radius of the circle is 17 units.

Let the circle passing through the point (-15,y).

Taking square root both the sides.

Taking square root both the sides.

The value of y is either -16 or 14.

Therefore the radius of the circle is 17 units. The point (-15,-16) or (-15,14) lies on this circle.

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.