An octahedron and its net are shown below. All the faces are the same size and shape. What is the surface area of the octahedron?

576 cm2

- 10.4 cm

998.4 cm2

499.2 cm2

12 cm

1,152 cm

12 cm

12 cm

Mario is constructing a frame for 10 in. by 8 in. photo. he wants the frame to be the same with all the way around in the same area of the frame and photo to be 120 square inches what is the dimension of the frame?

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle. what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle. what is the measure of angle a? enter your answer in the box. m∠a= 3.)quadrilateral abcd is inscribed in this circle. what is the measure of angle b? enter your answer in the box. m∠b= °4.)quadrilateral abcd is inscribed in this circle. what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle. what is the measure of angle c? enter your answer in the box.°

Abox holds 500 paperclips. after a week on the teacher's desk 239 paperclips remained. how many paperclips were used?