Question

Which Is the Best estimare of The área of The figure in square centimeters (as shown down) l need It in 5min​

Answer 1

38.28cm²

Explanation:

The area of the figure can be determined by expression the figure as two shapes.

A semicircle and trapezium;

Area of shape = Area of semicircle + Area of trapezium

Now;

Area of semicircle =
`(\pi r^(2) )/(2)`

Where r is the radius, which is
`(4)/(2)` = 2cm;

Area of semicircle =
`(3.142 x 2^(2) )/(2)` = 6.28cm²

Area of trapezium;

=
`(1)/(2) (a + b)h`

a and b are the base length = 6cm and 10cm

h is the height = 4cm

Input the parameters and solve;

=
`(1)/(2) (6 + 10) 4`

= 32cm²

The area of the shape = 6.28cm² + 32cm² = 38.28cm²