The diameter of a sphere joins

any two points on the sphere

the center and a point on the sphere
any two points on the sphere and contains the center

any two points on the sphere and does not contain the center

Third option is correct.

Step-by-step explanation:

The diameter of a sphere joins any two points on the sphere including the center as these three lines must be collinear.

Diameter of sphere divide the sphere into two equal parts.

And Diameter is the longest chord.

So, the diameter of a sphere joins any two points and contains the center.

Hence, third option is correct.

add 5 subtract 1

step-by-step explanation:

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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