Question

Isaac is cutting wood to build a clock. He wants the clock to have a long hand that extends from the center to the edge of the clock face. What must the approximate area of the face be if the hand he is using is 5 inches long? Use three point one four for pi.

nineteen point six three square inches

thirty-one point four square inches

sixty-two point eight square inches

seventy-eight point five square inches

Answer 1

Wasn't really necessary to repost it, I just wanted you to be aware that you originally posted in the wrong place.

Again, \[A=\pi r^2\] where \(r\) is the radius (distance from center to edge, just like a clock hand) and according to your problem statement, you should use \(\pi \approx 3.14\) for your calculation.

Answer 2

oh ok thx

Answer 3

What do you get for an answer?

Answer 4

d

Answer 5

That is correct, good job!

Answer 6

really

Answer 7

so its seventy-eight point five square inches

Answer 8

wow lml

Answer 9

In actuality, the value of \pi has an infinite number of digits, so 78.5 is just the approximate answer, but there are limits to how accurately one can measure and cut wood :-)

Answer 10

ok :-) thank you so much