Hey can some solve plss don't answer uselessly for points (question 53)
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Hey can some solve plss don't answer uselessly for points (question 53)
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Explanation:
area of ∆
1/2(38-14)(32-7)............. the radius is half the side which has 14cm
= 1/2×24×25 =300cm²
Now,
area of rect. = l×b= (32-7)(14) .... (total l=32 joined with semi circle with a radius 7cm)
= 25×14 =350cm²
Now area of a semi circle= 1/2(πr²)
= 1 ( 22 × 7²)
2 ( 7 )
= 11×7= 77cm²
We can also see that there is a small circle with a radius 3.5 cm which is not shaded.
therefore area of that circle= πr²
= 22/7 × 3.5²
= 22 ×3.5 ×3.5
7
=11×3.5=38.5cm²
now total area of the shaded parts = 300cm²+350cm²+77cm² -38.5cm² = 688.5cm²