Find the value of x. 8,13,x
1 answer:
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Answer:
A)
B)
Step-by-step explanation:
A) You can add these expression because they contain the same square root:
B) Same as above:
Answer:
≈ 77 cm²
Step-by-step explanation:
The area of the shaded portion is calculated as
area of outer sector - area of inner sector
= (πR² - π r²) × ( R is the outer radius, r is the inner radius )
= (π × 14² - π × 7² ) ×
= (196π - 49π ) ÷ 6
= 147π ÷ 6
≈ 77 cm² ( nearest whole number )