What is the area of a triangle with base 11 cm and height 21 cm?
Enter a decimal.
_________cm2
How would you get a decimal out of that? O.o
2007-10-31 12:03:46 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
115.5cm^2
2007-10-31 12:07:40 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The area of a triangle is 1/2bh
This would give you .5(11)21 = 115.5
I don't know if that is the decimal they wanted.
2007-10-31 19:08:21 · answer #2 · answered by burning_ice_73 2 · 0⤊ 0⤋
the formula is 1/2 bh here b = 11cm and h = 21 cm
There fore area is 115.5cm2
To get the decimal out of that...Multiply and devide by 10
we get 1155/10 = 231/2 = 115 1/2 Ans
2007-10-31 19:07:48 · answer #3 · answered by That's me ... 3 · 0⤊ 0⤋
area of a triangle is 1/2bh
11x21=231/2=115.5cm^2
2007-10-31 19:12:50 · answer #4 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
the area is (11 * 21)/2 = 115.5 cm^2
(Area = half base times height)
2007-10-31 19:07:57 · answer #5 · answered by Anonymous · 0⤊ 0⤋