Question

Calculate the area of triangle whose vertics are(3, -1, 2) (1, -1, 2) (4, -2, 1)

Answer 1

Explanation:

Area of the triangle

= 1/2 {3(-1+2) + 1(-2+1) + 4(-1+1 )}

= 1/2 { 3*1 + 1(-1) + 4*0}

= 1/2 { 3 - 1 + 0}

= 1/2 *(2)

= 1 वर्ग इकाई