Question

Please help. pls show workings ​

Answer 1

Answer:10.5cm^2

Step-by-step explanation:

Area of the square = L^2 =(7) ^2=49cm^2

Radius of quadrant = 7cm

Area of the quadrant =1/4 x πr^2

1/4 x 22/7 x (7) ^2

1/4 x 22/7 x 49

=38.5cm^2

Area of unshaded part= area of square - area of quadrant

49cm^2 - 38.5cm^2

=10.5cm ^2

Answer 2

≈ 10.52 cm²

Explanation:

The unshaded area is calculated as area of square subtract area of quarter circle, thus

A = 7² -
`(1)/(4)`πr²

= 49 - ( 0.25π × 7²)

= 49 - (0.25π × 49)

= 49 - 12.25π

≈ 10.52 cm² ( to 2 dec. places )