Geometry help please ! Given the circle centered at point A shown in the diagram has a diameter of 7 cm in length, determine the approximate area of the circle.
A. 76.97 cm
B. 38.48 cm
C. 43.98 cm
D. 21.99 cm

In pqr the obtuse angle is 105 and the shorter sides measure 4 and 7 units rounded to the nearest tenth what is the area of triangle pqr

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Which expression is rational? 6. , square root two, square root 14, square root 49