Answer:
See Explanation Below
Step-by-step explanation:
Given
Required
Prove
To start with; we open the bracket on the left hand side
Reorder
From trigonometry;
So;
becomes
Also from trigonometry;
So,
becomes
Proved
ΔABC is similar to ΔDEF. The ratio of the perimeter of ΔABC to the perimeter of ΔDEF is 1 : 10. If the longest side of ΔDEF meas
2 answers:
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Answer:
Area of the shaded region = 6.88 cm²
Step-by-step explanation:
Area of the shaded region = Area of the rectangle - Area of the semicircle
Area of the rectangle = Length × Width
Length of the rectangle = AD = 8 cm
Width of the rectangle = OP = 4 cm [OP, OB and OC are the radii of the circle which are equal in measures]
Area of the rectangle = 8 × 4 = 32 cm²
Area of the semicircle =
=
=
= 25.12 cm²
Area of the shaded region = 32 - 25.12
= 6.88 cm²
