Answer: See explanation
Step-by-step explanation:
1. That's a rectangle, the area of a rectangle is l (length) × w (width)
l = 11 cm
w = 7.7 cm
11 × 7.7 = 84.7
Area = 84.7 cm²
2. That is a triangle, the area of a triangle is 1/2 × b (base) × h (height)
b = 12 ft
h = 4ft
1/2 × 12 × 4 = 1/2 × 48 = 24
Area = 24 cm²
3. That is a trapezoid, the area of a trapezoid is [tex]\frac{a (base) + b(base)}{2} h(height)[/tex]
a = 6 cm
b = 13 cm
h = 5cm
((6 + 13) ÷ 2) x 5
(19 ÷ 2) x 5 = 9.5 × 5 = 47.5
Area = 47.5 cm²
4. Same formula: 1/2 × b × h
b = 3 1/4 in
h = 4 in
1/2 × 3 1/4 × 4 = 1/2 × 13/4 × 4
1/2 × 13 = 6.5
Area = 6.5 in²
Hope I helped!
