please can someone help me I will mark brainliest
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Step-by-step explanation:
4 side = 20
side = 5
shaded area = total area - lower unshaded area - upper unshaded area
total area = 5 ^2
=25cm2
lower unshaded area is a right angled triangle so area = 1/2 * base * heighrt
base = side of square = 5
height = 5 -3 = 2
area = 1/2 * 2 * 5 = 5
lower unshaded area = 5cm2
uppers unshaded area is also a right angled triangle. so area is 1/2 * base * height.
base = side of square = 5
height = 5-3.5 = 1.5
area = 1/2 * 1.5 * 5
= 3.75
shaded area = total area - lower unshaded area - upper unshaded area
= 25 - 3.75 - 5
= 16.25
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