A Norman window has the shape of a rectangle surmounted by a semicircle. If the perimeter of the whole window is 24 ft . give the area A of the window in square feet when the width is 5.5 ft . Give the answer to two decimal places. (a) What is the lenght of the semicircle top? (b) What is the length of the sides? (c) What is the area of the rectangle? (d) What is the area of the semicircle? (e) What is the area of the window?

งหาปริมาตรของพีระมิดฐานสี่เหลี่ยมจัตุรัสซึ่งมีด้านยาวด้านละ 30 เซนติเมตร ละมีความสูงเอียง 25 เซนติเมตร

3. Sketch and name a quadrilateral that fits each description. Make sure to label all equal sides and angles. a) The diagonals are equal, but the sides are not all equal. b) The diagonals are equal and all the sides are equal. c) The diagonals are not equal and no two sides are equal.

In the pentagon \( A B C D E \) angle \( A C B= \) angle \( A E D=90^{\circ} \). Triangle \( A C D \) is equilateral with side length 12 cm . \( D E=B C=6 \) a. Calculate \( A E \).

BLos estudiantes de 9 dibujaron un mural como el de la figura. Damyor \( =8 \mathrm{~m} \) y dmonor \( =2 \pi \mathrm{~m} \) ¿cuál es el área rayada de la figura?

A circle has a radius of 5 cm. A tangent is drawn at point A on the circle. Write down the relationship between the radius OA and tangent line AT.