Question

3. Find the base of a triangle if its
(i) area is 25 ares and height 20 m.
(ii) area is 16 hectares and height 40 decametres.
1 are = 100 m
1 hectare = 10000 m²
1 decametre = 10 m​

Answer 1

Step-by-step explanation:

$area \: of \: triangle \: = \frac{1}{2} \times base \times height$

(i).area =2500m² , h=20m

2500=1/2*base*20

2500=b*10

b=250m.

(ii).area=160,000m², h=400m.

160,000=1/2*400*base

400*2=800=base.

hope helps u.

Answer 2

Answer:

(i) area of the triangle is 25ares

25ares =25*100=2500

so, using the formula

=1/2*base*height= area of triangle

=1/2*base*20=2500

=base*10=2500

=base=2500/10

base=250

(ii).area=160,000m², h=400m.

160,000=1/2*400*base

400*2=800=base.