Question

4. The formula for finding the area A of a triangle is
1
given by A=1/2bh, where b and h represent the base
and the height of the triangle respectively.
(i) If b = 20 cm and h = 45 cm, find the area of
the triangle.
(ii) If A = 30 cmand b = 10 cm, find the height of
the triangle.​

Answer 1

Answer:

• area of triangle = 1/2(bh)

=> 1/2(20)(45) = 10(45) = 450

• area of triangle =1/2(bh)

=> 1/2(30)(10) = 30(5) = 150

Answer 2

Answer:

$area \: of \: a \: triangle = \frac{1}{2} bh$

____________________

i)1/2×bh=area

1/2×20×45=area

450 cm²=area

_____________________

ii)1/2×30 ×10=area

150 cm²=area