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Please can someone help me I will mark brainliest |
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Answer» 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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