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3 years ago

Evaluate the expression 3.14(a2 + ab) when a = 4 and b = 3

Mathematics

1 answer:

barxatty [35]3 years ago

7 0

when a=4 and b=3,

3.14((4 x 2)+ (4 x 3)) = 3.14(8+12) = 3.14 x 20 = 62.8

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2 years ago

Hello, happy Friday, I am just here with some geometry questions.

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2 years ago

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2 years ago

7x-3=18 What is x in the question i cbat figure it out

il63 [147K]

7x-3 = 18
+3 for both sides

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3 0

2 years ago

The pie chart shows information about the voters in an election 2800 more women voted than men work out the total number of vote

Cerrena [4.2K]

The angle subtended by the women voters are 100° more than the angle subtended by the men voters.

The total number of voters are 10080 voters

Reasons:

The angle subtended by the men on the pie chart = 130°

The number of women = 2800 + The number of men

Therefore;

Angle subtended by the women voters on the pie chart = 360° - 130° = 230°

The difference between the angle representing women and the angle

representing men = 230° - 130° = 100°

Therefore;

100° = 2800

Which by common ratios gives;

$\dfrac{100^{\circ}}{360^{\circ}} = \dfrac{2800}{Total \ number \ of \ voters }$

100 × Total number of voters = 2800 × 360

$The \ total \ number \ of \ voters = \dfrac{2800 \times 360}{100} = 10080$

The total number of voters = 10080

Learn more here:

brainly.com/question/20431949

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2 years ago