Question

Find the area if triangle whose sides are 42cm,20cm,and34cm

Answer 1

area of triangle=l×b×h
=42×20×34
=28560 cm
hope it helps you

Answer 2

s= (42+20+34)/2=. 48

area =✓48(48-42)(48-20)(48-34)
=✓48× 6×28×14
=√2×2×2×3×2×2×3×7×4×7×2
= 16×3×7
= 48×7
=. 336 cm^2