Question

ABC is a scalene triangle whose sides are 3 cm, 4 cm and 6 cm.
A
4 cm
3 cm
с C
6 cm
a. Calculate its area. (Round off the answer to the nearest whole number.)
b. Find the height corresponding to BC.​

Answer 1

Answer:

Area of scalene triangle = s(s-a)(s-b)(s-c)

s = (3 + 4 + 6) / 2

= 13 / 2 cm

= 6.5 cm

Area = 6.5 (6.5 - 3) (6.5 - 4) (6.5 - 6)

= 6.5 × 3.5 × 2.5 × 0.5

= 28.4375

≈ 28 square centimeters