Mathematics: Help me with this! i am confuseddddddd!!

Help me with this! i am confuseddddddd!!

smit715674

24.01.2022

73.5 $cm^{2}$

Step-by-step explanation:

The shaded area is in the shape of a trapezoid, so to find the area all we have to do is use the formula

$A = \frac{a + b}{2} h$ , where h is height, a is base 1, and b is base 2.

Plugging in the values, work on solving this equation:

$A = \frac{(9) + (12)}{2}(7)$

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We should be left with

$A = \frac{21}{2}(7) = 10.5 (7) = 73.5 cm^{2}$

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