Homework Help: Math

Posted by margie o on Tuesday, October 20, 2009 at 3:59pm.

14. There is a rectangular piece of property that measures 188 ft by 100 ft. On the property there is a circular lake with a diameter of 72 ft. In the center of the lake there is a circular island with radius of 12 ft. The rest of the property is land. What percentage of the property is covered in water? Use 3.14 for and round your answer to the nearest tenth of a percent.=2.4%
15. You deposit $1500 to start a bank account that gives 5.4% interest, compounded annually. If you do not touch the account, how much will you have after 3 years? Make sure you round your answer to the nearest cent.=$1763.79

16. You find an old savings bond that originally cost $50. It has been compounding 3% interest annually for the last 75 years. How much is it worth? Make sure you round your answer to the nearest cent.=$474.39

Math - jim, Tuesday, October 20, 2009 at 4:47pm
14. I don't get the same answer.

a) Get size of property = 188 * 100 = 18800

b) Get size of lake = pi * 36^2 = 4069.44

c) Get size of island = pi * 12^2 = 452.16

d) Covered in water = (b) - (c)

Percentage = (d) / (a)

15. I don't get exactly this answer either, but very close - about $7 less. I don't think that the difference is due to rounding, but I'm not completely sure.

16. I don't get exactly this answer either. 1.03^75 = 9.1789. 9.1789 * 50 = 459.

Answer this Question

Related Questions

Math - 14. There is a rectangular piece of property that measures 188 ft by 100 ...
math finals - 14. There is a rectangular piece of property that measures 188 ft ...
math - A rectanfular piece of property measures 50 feet by 150 feet. the owner ...
math - A rectangular piece of property measures 50 feet by 150 feet. The owner ...
Math - What is the volume of a rectangular solid that measures 16 ft by 14 ft by...
math - Dana buys a piece of carpet that measures 20 square yards. Will she be ...
math - Theotis had to load a truck with television sets. The cargo area of the ...
MATH - A carpenter wants to be sure that the corner of a building is square and ...
math - 1.name the property of addition and/or multiplication that is illustrated...
Math - 4. A rectangular prism measuring 7 ft by 8 ft by 4 ft. a. 224 ft^3 b. 112...

For Further Reading

First Name:
School Subject:
Answer: