Determinare I'area del triangolo di vertici \( A=(1,0,0), B=(1,-1,2), C=(2,1,-4) \) Answer a. \( \sqrt{3} / 2 \) b. \( 1 / 2 \) c. \( 3 / 2 \)

Qual é a fórmula para calcular a área de um círculo?

Exploration An object has a volume of 36 cubic inches. A box has side lengths 1 foot by 3 inches by 4 inches. a. What is the smallest number of these objects that can fit in the box? Explain your reasoning.

Write the corresponding parts not given for the congruent triangles. \( \angle B=90^{\circ} \) and \( \angle \mathrm{T}=90^{\circ} \) \( \mathrm{CB}=\mathrm{UT} \) \( \mathrm{AB}=\mathrm{ST} \)

3.) WHEA OF IS The ARE OF A SECTOR OF A CIRCLE RADIUS \( r=13 \mathrm{cM} \) IF the CORRESPONPING CENTRAL ANGLF IS \( 30^{\circ} \) ? 4.) WHAT IS TLE AREA OF A SEGTOR OF A CIRULE WHT DIAMETER \( D=28 \mathrm{cM} \) If the GENTRAL ANGLE IS \( 320^{\circ} \) ?

9. Each face of a cube is a square with a side length of 8 centimeters. What is the total area of all of the faces of the cube?