Answer:
85.6 cm^2
Step-by-step explanation:
The area of the central triangle bounded by each of the sides can be computed as ...
A = (1/2)r²sin(α) . . . . where α is the central angle, 360°/5 = 72°
There are 5 such triangles, so the area of the pentagon is ...
A = (5/2)(6 cm)²sin(72°) ≈ 85.595 cm²
The area of the regular pentagon of radius 6 cm is about 85.6 cm².
Answer:
Step-by-step explanation:
To solve a formula for one of its variables do that
Let us use these steps to solve our question
∵ V = b²h
→ Underline b
∴ V = <u>b²</u>h
→ Multiply both sides by 3 to cancel the denominator on the right side
∴ 3V = <u>b²</u>h
→ Divide both sides by h to move it to the other side
∴
→ To find b take √ for both sides
∴
→ The square root will cancel the power 2 of b
∴
→ Switch the two sides
∴
