Question

Brad measured the length of an object as 2.1 * 10^4 cm. Which items might he have measured? Check all that apply.

1. length of a city block
2. length of a city park
3. height of a person
4. distance across a city
5. height of an apple tree
6. width of a screen in a theater
HURRY! Please!
7. depth of water in a swimming pool

Answer 1

1. length of a city block

2. length of a city park

Explanation:

You first have to make the conversion from scientific notation to regular numbers, the length of that object would be 2.1x 10,000= 21,000, so 21,000 centimeters are only 210 meters, that is too long to be height of a person, or an apple tree, the screen in a theater or the depth of water in a swimming pool, and is way too short to be the length across a city, so the only options would be length of a cuty block, and length of a city park.