The average distance from the sun to the planet mercury is about 58,000,000 km. the diameter of a human hair is about 0.0025 cm. (
a. what is the distance from the sun to mercury written in scientific notation? (
b. what is the diameter of a human hair written in scientific notation? (
c. in comparing the measurements in parts (
a. and (
b., what else must be done before a comparison is made?

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.°