Guys i need the right answer asap plz!
is the answer
a.25.12 feet
b.8 feet
c.4 feet
d.12.56 feet
i need the correct answer asap plz!

Write the sentence as an equation. b increased by 281 is d

The amount of money, in dollars, in an account after t years is given by a = 1000(1.03)^t. the initial deposit into the account was $_^a0 and the interest rate was _a1% per year. only enter numbers in the boxes. do not include any commas or decimal points^t. the initial deposit into the account was $__^a0 and the interest rate is % per year.

Franco wants to double the volume of the cone. what should he do?