Helping my son with his studying for his 7th grade math final. We got the perimeter after we solved for the missing sides. The sides are 10cm, 20cm and 17.3 cm. Thanks for your help.
2007-05-27 07:03:30 · 4 answers · asked by nickfromct 3 in Science & Mathematics ➔ Mathematics
Area of a triagle is 1/2 base times height. For a right triangle, base and height are the length of the 2 legs. So, (10)(17.3)/2
86.5
2007-05-27 07:08:01 · answer #1 · answered by Anonymous · 0⤊ 0⤋
divide the hypotenuse with the aid of 2, that's the degree of the smallest element, than the size of the middle element is smallest element(squareroot3) than multiply the two aspects you got here across mutually than divide with the aid of 2. if the hypotneuse is 12, the element opposite the 30 degree perspective is 6 and the element opposite the 60 degree perspective is 6(squareroot3) so the section is 36(squareroot3)
2016-12-12 03:25:51 · answer #2 · answered by messenger 4 · 0⤊ 0⤋
Area
= (1/2)(leg1)(leg2), since it is a right triangle
= (1/2)(10)(17.32)
= 86.6 cm^2
2007-05-27 07:08:52 · answer #3 · answered by sahsjing 7 · 0⤊ 0⤋
Area formula for a triangle
A = 1/2 b h
- - - - - - - - - -s-
2007-05-27 07:11:26 · answer #4 · answered by SAMUEL D 7 · 0⤊ 0⤋