Question

Can you please check my answers (area/perimeter)

http://s1324.beta.photobucket.com/user/Marcelia1/media/Mathsucks.png.html?sort=3&o=0

1)
A=15ft^2
P=18ft

2)
A=7.5m^2
P=27m

3)
A= 52.3in^2
P=26.8in

4)
SA=979.6yd^2
V=2260.8yd^3

5)
SA=190cm^2
V=126cm^3

6)
SA=726mm^2
V=1331mm^3

Am I right?

Answer 1

part 1 is good to go :-)

Answer 2

check #2 again

Answer 3

1) right

Answer 4

check perimeter for #3

Answer 5

perimeter #2, it shoulde be 11 but area is right

Answer 6

Ok I was having trouble with two. How'd you get 11?

Answer 7

just add all numbers around it:
2.5+2.5+0.5+2.5+2.5+0.5

Answer 8

everything else is good except 2 and perimeter for 3

Answer 9

Ok thanks RadEn :) Where did I go wrong on 3 jayz?

Answer 10

area for 2
area triangle + area triangle + area rectangle
area triangle = 2 x 2.5 = 5 we dont divide by 2 since theres 2 triangles
area of rectangle = 0.5 x 3 = 1.5

area for 2 = 1.5 + 5 = 6.5m^2
perimeter = add all sides on the outsides
perimeter = 2.5+2.5+0.5+2.5+2.5+0.5 = 11m


sorry my bad 3 is right

Answer 11

#3
area=52,26
perimeter=26,84

Answer 12

Ok thanks, you guys are lifesavers :)

Answer 13

welcome :)

Answer 14

np glad to help