Match each polygon to the space figure formed by rotating about the axis of rotation shown.

Step-by-step explanation:

When a triangle (polygon A) is rotated about the axis of rotation, a cone is obtained.

When you rotate a rectangle (polygon C) about the axis of rotation, we obtain a cylinder.

In polygon B, the two-dimensional shape can be seen as a combination of two triangles, and when this is rotated, we obtain a double cone.

Therefore:

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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