Homework Help: Math

Posted by Connor on Thursday, January 19, 2012 at 5:22pm.

There's a triangle
the numbers on each sides are 22 25 and 11
What is it's perimeter and area?
Answer: P is 58 A is 345

There's a rectangle
the numbers on 2 of the sides says 4 and 1
What is the Perimeter and area?
Answer: P is 10 and A is 4

There's a rectangle
the numbers are 27 and 21
What is the perimeter and area?
Answer: P is 136 and A is 987

There's a square
the number is 24
What is the perimeter and area?
Answer: P is 96 and A is 576

There's a triangle
the numbers are 1.5, 3, and 2
What is the perimeter and area?
Answer: P is 6.5 and A is 4.500

There is a square
the number is 30
what is the perimeter and area?
Answer: P is 120 and A is 900

There is a rectangle
the numbers are 13 and 17
what is the perimeter and area?
Answer: P is 60 and A is 220

Are all of these correct?

Math - Steve, Friday, January 20, 2012 at 12:11am
1.
I get A = 120.9
Even if it were a rectangle 25x11, the area would only be 275.
s = 58/2 = 29
A = sqrt(29*7*4*18)

2.
P = 2(27+21) = 96
A = 27*21 = 567

Am I reading the wrong numbers here? How did you arrive at your first two answers?

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