Posted by **mark** on Saturday, February 2, 2008 at 2:57pm.

The old lion cage at the zoo was a square, with sides x meters long. For the part of the zoo's 50 birthday celecration, the zoo expanded the length and width. The expression for the total area of the new cage is (x^2+18x+81) square meters.

Part 1:Robert thinks that the cage's length had increased by 6 meters, and its width increased by 8 meters. Is Robert right?

Part 2:How much did the zoo expand the length and width?

Part 3:If the area of the old lion cage was 25 square meters, what is the area of the new cage?

I'm not sure what are the answers are. For part 1, I think Robert is wrong, because i used factoring and 6+8=14 and 6 x 8=48.

For part 2, I think the length and width are 9.

Part 3, i don't have an answer for that.

- math -
**drwls**, Saturday, February 2, 2008 at 3:08pm
Since x^2 + 18 x + 81 = (x+9)^2, the cage must still be square and increased in length of each side by 9 meters. That answers (1) and (2).

(3) If the old area was 25 m^2, the old side length a was sqrt 25 = 5 m.

Now it is 5 + 9 = 14 m

## Answer this Question

## Related Questions

- French - Can someone check my work? I'm trying to say: "He was at the zoo and a ...
- algerbra - sasha researched the size of zoos in her state. she found that the ...
- math - Jenna's sixth-grade class is taking a bus to the zoo. The zoo is 156 ...
- Law/421 - If a zoo houses a venomous snake and the snake escapes its confines ...
- convert money (practice) - In 2005 admission to the Bronx zoo was $6 for a child...
- English - I included other speech acts. Thank you. 1)“How would you like to go ...
- math - In a zoo, 21% of the animals are reptiles and 11% are birds. There are a ...
- Geometry - There were 30 people. 9 visited the museum and zoo. 14 visited the ...
- math - A zoo kitchen's weekley grocery list shows the zoo orders 56 pounds of ...
- math - the entrance fee to the zoo is $3,and to get into the gardens is $2.A ...

More Related Questions