Question

pls questions no. 3 in 1 pls give me solution

Answer 1

since
Area=1/2 × base × height,

then
i):-

area=1/2 ×5×12,

=5×6=30 ,

ii):-

area=1/2×7×16,

area=7×8=56 ,

iii):-

area=1/2×9×20,

area=9×10=90,



2):-


I):-

base=10.5 cm,

altitude (height)=6 cm,

then
area of the triangle =1/2 × base × height(altitude),


area of the ∆ =1/2 × 10.5 × 6,

=10.5 × 3,

=31.5 cm²,


II):-


base=1.5 m,

altitude (height)=0.8 m,

then

area of the ∆ =1/2 × 1.5 × 0.8,

=1.5 × 0.4,

=0.6 m²