27. PQRS is a rectangle. What is the formula to calculate the area of PQRS? A \( A=\frac{1}{2} b h \) B \( A=l b \) C \( A=l+b \) D \( A=2(l+b) \)

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 \( A E \).

What is the missing reason in step 3?Statements:1. m∠ TRV=60° m∠ TRS=(4x)^circ 2. ∠ TRS and ∠ TRV are a linear pair 3. m∠ TRS+m∠ TRV=180 4. 60+4x=180 5. 4x=120 6. x=30Reasons:1. given 2. definition of linear pair 3.? 4.substitution property of equality 5.subtraction property of equality 6. division property of equality substitution property of equalityangle addition postulatesubtraction property of equalityaddition property of equality

งหาปริมาตรของพีระมิดฐานสี่เหลี่ยมจัตุรัสซึ่งมีด้านยาวด้านละ 30 เซนติเมตร ละมีความสูงเอียง 25 เซนติเมตร

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.

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.