Question: Can you help me solve this 4. Find the radius of the inscribed circle in quadrilateral ABCD if the area of ABCD is 240 cm2

Can you help me solve this

4. Find the radius of the inscribed circle in quadrilateral ABCD if the area of ABCD is 240 cm2 and its perimeter is 64 cm. 5. Find the area of a quadrilateral is its diagonals are 5 cm and 8 cm, and the angle between them is 450 . 6. Find the angle measure of a regular polygon with 20 sides. 7. Find the number of sides of a regular polygon with angle measure 1650. 8. Find the central angle of the circumscribed circle around a polygon with 10 sides. 9. Find the radii of the inscribed and circumscribed circles for a regular 12-gon with a side 20 cm. 10. Find the side and the area of a regular hexagon if the radius of its inscribed circle is 8 cm

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