Question

A museum groundskeeper is creating a semicircular statuary garden with a diameter of 21 feet. There will be a fence around the garden. The fencing costs $8.25 per linear foot. About how much will the fencing cost altogether? Round to the nearest hundredth. Use 3.14 for π.

Answer 1

Step-by-step explanation:

area of fencing = (2 ×1.34 × 21 ÷2 )+21

=28.14+21

: =49.14foot

now ,the cost of fencing will be 49.14 ×8.25$

=140.0490

Answer 2

Answer:

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Given :

diameter of semicircular garden - 21 feet

cost of fence - 8.25$

To find :

The cost of fencing

Formula used :

circumference of semi circle - $\pi × r$

Proof :

$circumference = \pi \times r \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{22}{7} \times \frac{21}{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 33ft$

Cost = 8.25 × 33

= 272$ (approx)

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