Which is the best estimate for (2.8 times 10 Superscript 3 Baseline) (4.1 times 10 Superscript 6 Baseline) written in scientific notation?

7 times 10 Superscript 9

1.2 times 10 Superscript 10

1.5 times 10 Superscript 10

12 times 10 Superscript 18

Can someone pls ! pls answer all. no explanation needed..

What dimensions can créate more than one triangle ?

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)