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In the figure, PSR, RTQ and PAQ are three semicircles of diameters 10 cm, 3 cm and 7 cm respectively. Find the perimeter of the shaded region. [Use π = 3.14]★ PIC REFER TO ATTACHMENT★ REQUIRED FULL EXPLANATION ANSWER |
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Answer» Radius of semicircle PSR = 10cm/2 = 5cmRadius of semicircle PAQ = 7cm/2 = 3.5cmRadius of semicircle RTQ = 3cm/2 = 1.5cmPerimeter of SHADED region = PERIMETER of semicircle PSR + perimeter of semicircle RTQ + perimeter of semicircle PAQAnd we know that perimeter of a semicircle =π×rRequired perimeter =π×5cm+15×1.5cm+π×3.5cm=3.14(5cm+1.5cm+3.5cm)=3.14X10cm=31.4cmStep-by-step explanation: |
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