Answer:
Step-by-step explanation:
Use the formula for the area of a triangle,
Area of a triangle = [tex]\frac{1}{2}(\text{Base})(\text{Height})[/tex]
7). Area of the triangle = [tex]\frac{1}{2}(20)(7.4)[/tex]
= 74 km²
8). Area of the triangle = [tex]\frac{1}{2}(4)(15.4)[/tex]
= 30.8 cm²
9). Area of the triangle = [tex]\frac{1}{2}(16)(7)[/tex]
= 56 m²
10). Area of the triangle = [tex]\frac{1}{2}(11)(7.7)[/tex]
= 42.35 km²
