1). A TRIANGLE OF BASE 8 CM AND HEIGHT 7 CM. Find the Area.
2). A TRIANGLE WITH A 50 MM BASE AND A 7 MM HEIGHT. Find the Area.
2007-11-15 06:40:46 · 10 answers · asked by jane 1 in Science & Mathematics ➔ Mathematics
Area of Triangle = 1/2 * Base * Height
1) A(Triangle) = 1/2 * 8 * 7 = 28cms^2
2) A(Triangle) = 1/2 * 50 * 7 = 175mms^2
Hope that helps
2007-11-15 06:45:11 · answer #1 · answered by gmat g 3 · 1⤊ 0⤋
Area=1/2B*H
4*7=28
25*7=175
2007-11-15 06:46:12 · answer #2 · answered by GodCares 3 · 1⤊ 0⤋
8*7/2 = 28 cm^2
50*7/2 = 175 mm^2
2007-11-15 06:44:59 · answer #3 · answered by ironduke8159 7 · 0⤊ 0⤋
1). A=b*h so 7*8=56 divide 56 by two t. the answer is 28
2) 50*7=350 Divide that by two. Answer is 175
2007-11-15 06:44:37 · answer #4 · answered by SoRealistic 3 · 0⤊ 0⤋
1) 28 cm^2
2) 175 mm^2
2007-11-15 06:48:36 · answer #5 · answered by warcry80 2 · 0⤊ 0⤋
Base times height divided by two
2007-11-15 06:43:32 · answer #6 · answered by JHDillon 2 · 1⤊ 0⤋
a) Use cosine rule to find angle DEF. Let's call that angle "e", then DF^2 = DE^2 + EF^2 - 2(DE)(EF) cos e b) Area = (DE)(EF) sin e /2 OR if you let a = DE, b = EF, c = DF and call s = (a + b + c)/2 (the semi-circumference), than Area = sqrt (s (s-a) (s-b) (s-c) ) Either way should yield the same exact answer.
2016-05-23 07:15:36 · answer #7 · answered by ? 3 · 0⤊ 0⤋
i beleive its 1/2 base X height but i could be wrong...
2007-11-15 06:45:05 · answer #8 · answered by Lizzy 2 · 0⤊ 0⤋
go to mathematical or trig math on the web and get the formula because it looks like you''ll be getting a lot of different answers
2007-11-15 06:48:31 · answer #9 · answered by Anonymous · 0⤊ 0⤋
56cm
350mm
2007-11-15 06:44:38 · answer #10 · answered by HaNDSAbOY 1 · 0⤊ 2⤋