Question

Giving 15 points

Which of the following calculated values will have three significant digits?
The area of a circle with radius 5,000 ft
The perimeter of a triangle with side lengths 84.5 cm, 94 cm, and 117 cm
The area of a square with side length 0.024 m
The circumference of a circle with radius 0.0910 m
The perimeter of a square with side length 1.02 ft
The area of a triangle with base 4.50 In, and height 10.02 in

Answer 1

C D and E

Explanation:

Remember what you are asking for. You don't want an answer. You just what to know which measurements will give 3 sig digs.

a) The area of a circle with r = 5000 feet has one sig dig: the 5

b) The perimeter of a triangle: The 94 has only 2 sig digs. Therefore the answer will have 2 sig digs.

c) Circumference of a circle with a diameter of 0.0910 The zero on the right counts as a sig dig. You have 3 sig digs.

d) Perimeter of a square with s = 1.02 That's 3 sig digs. The zero counts.

e) The 0 in 4.50 counts

C D and E