Johnny is designing a playground model for a school project. the design below will be the foundation of his model. what is the area of the model John design? use 3.14 for p.

Question

asked Jan 14, 2022 83.3k views

1 Answer

Blow ThemUp · Answer 1 · 2022-01-18T15:32:38+0000

Answer:

586.17

Explanation:

Area of triangle = 1/2 x base x height

$= (1)/(2) * 18 * 7 \\ = (1)/(2) * 126 \\ = 63 {cm}^(2)$

Area of Rectangle = Length x Width

$= 22 * 18 \\ = 396 {cm}^(2)$

Area of Semicircle =

$(1)/(2) \pi {r}^(2) \\ = (1)/(2) (3.14)(9) {}^(2) \\ = 127.17cm {}^(2)$

Total Area = Area of Triangle + Area of Rectangle + Area of Semicircle

$= 63 + 396 + 127.17 \\ = 586.17cm {}^(2)$