Please give me answer fast
I don't understand this question.
These two parts b)and e)
Please expert answer me

Dear Student

Area of triangle = (1/2) × base × height

b) base = 3 m
Height = 2.9 m
Area of triangle = (1/2) × 3 x 2.9
Area of triangle = 4.35 m²

e) base = 9 m = 900 cm [ 1m = 100 cm]
height = 4.2 cm

Area of triangle = (1/2) × base × height
Area of triangle = (1/2) × 900 x 4.2 = 1890 cm²

Regards