Find the area of each of the following triangles:
(a) 
(b) 
(c) 
(d) 
(a) It is given in the question that,
Height of triangle = 3 cm
Base of triangle = 4 cm
We know that,
Area of triangle = 
× Base × Height
= 6 cm2
∴ Area of triangle is 6 cm2
(b) It is given in the question that,
Height of triangle = 3.2 cm
Base of triangle = 5 cm
We know that,
Area of triangle = 
× Base × Height
= 8 cm2
∴ Area of triangle is 8 cm2
(c) It is given in the question that,
Height of triangle = 3 cm
Base of triangle = 4 cm
We know that,
Area of triangle = 
× Base × Height
= 
× 4 × 3
= 
× 12
= 6 cm2
∴ Area of triangle is 6 cm2
(d) It is given in the question that,
Height of triangle = 2 cm
Base of triangle = 3 cm
We know that,
Area of triangle = 
× Base × Height
= 
× 3 × 2
= 
× 6
= 3 cm2
∴ Area of triangle is 3 cm2