What is 6+5/7 converted into a mix number

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

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)

Find the missing dimension! need asap! tiny square is a =3025 in ²