Answer:
<h2>SA = 166 cm²</h2>
Step-by-step explanation:
We have three pairs of rectangles:
4cm × 5cm
4cm × 7cm
5cm × 7cm
The formula of an area of a rectangle l × w:
A = l × w
l - length
w - width
Substitute:
A₁ = (4)(5) = 20 cm²
A₂ = (4)(7) = 28 cm²
A₃ = (5)(7) = 35 cm²
The Surface Area:
SA = 2A₁ + 2A₂ + 2A₃
Substitute:
SA = 2(20) + 2(28) + 2(35) = 40 + 56 + 70 = 166 cm²
Answer:
Option A
Step-by-step explanation:
As ler the comment above, the square has sides of 10cm and circle inside it has a diameter of 10cm, to mean the radius of the circle is 5cm
The area of square is given by d*d
The area of circle is given by 
To get area of shaded part where we have a square of 10 cm and inside square is a circle of 10 cm diameter, then the shaded area is
Area of square minus circle
Area of square is 10*10=100
Area of circle is 3.14*5*5=78.5
Shaded area is 100-78.5=21.5 square centimeters
Answer:
108
Step-by-step explanation:
Answer:
It's B :)
Step-by-step explanation:
Answer:
G
Step-by-step explanation:
