Question

Triangle A:
Base: 5 cm
Height: 5 cm
Triangle B:
Base: 5 cm
Height: 5 cm
Rectangle C:
Length: 5 cm
Width: 12 cm
Rectangle D:
Length: 12 cm
Width: 5 cm
Rectangle E:
Length: 13 cm
Width: 10 cm

The formula for the area of a rectangle is: A = l ● w
The formula for the area of a triangle is: A = s²

A: *blank 1* = *blank A* cm²
B: *blank 2* = *blank B* cm²
C: *blank 3* = *blank C* cm²
D: *blank 4* = *blank D* cm²
E: *blank 5* = *blank E* cm²

Surface area = *blank f* cm²

Any blank with a number has options for it blanks with Letters just fill it in to the best you can

Options for blanks 1 to 5
Options A: A = 5 * 12

B A = 1/2 * 5 * 12

C A = 13 * 10

D A = 12 * 10

E A = 1/2 * 5 * 12

F / A = 5 * 12

G A = 5 * 10

Answer 1

Let's calculate the areas of the triangles and rectangles, then fill in the blanks accordingly.

### Areas Calculations

**Triangle A**:
- Base = 5 cm
- Height = 5 cm
- Area = (1/2) * base * height = (1/2) * 5 * 5 = 12.5 cm²

**Triangle B**:
- Base = 5 cm
- Height = 5 cm
- Area = (1/2) * base * height = (1/2) * 5 * 5 = 12.5 cm²

**Rectangle C**:
- Length = 5 cm
- Width = 12 cm
- Area = length * width = 5 * 12 = 60 cm²

**Rectangle D**:
- Length = 12 cm
- Width = 5 cm
- Area = length * width = 12 * 5 = 60 cm²

**Rectangle E**:
- Length = 13 cm
- Width = 10 cm
- Area = length * width = 13 * 10 = 130 cm²

### Filling in the blanks:

Now we can fill in the blanks.

A: **12.5** = **1/2 * 5 * 5** cm²
B: **12.5** = **1/2 * 5 * 5** cm²
C: **60** = **5 * 12** cm²
D: **60** = **12 * 5** cm²
E: **130** = **13 * 10** cm²

Now, for the total surface area:

**Surface Area** = Triangle A + Triangle B + Rectangle C + Rectangle D + Rectangle E
= 12.5 + 12.5 + 60 + 60 + 130 = 275 cm²

Surface area = **275** cm²

### Final Blanks:

A: **12.5** = **1/2 * 5 * 5** cm²
B: **12.5** = **1/2 * 5 * 5** cm²
C: **60** = **5 * 12** cm²
D: **60** = **12 * 5** cm²
E: **130** = **13 * 10** cm²

Surface area = **275** cm²