739.88 cm²
Step-by-step explanation:
The shape can be divided into;
A cuboid
2 half-cylinders
The surface area of cuboid (please note the sides we are not multiplying by 2);
2 (9 * 2) = 36
9 * 14 = 126
2 * 14 = 28
36 + 126 + 28 = 190
The surface area of first half-cylinder;
(2*π*7 * 9)/2 = 197.92
π*7²) = 153.94
197.92 + 153.94 = 351.96
The surface area of the second half-cylinder;
(2*π*7 * 2)/2 = 43.98
π*7²) = 153.94
43.98 + 153.94 = 197.92
Total surface area;
190 + 351.96 + 197.92
= 739.88 cm²
Learn More:
For more on surface area check out;
https://brainly.com/question/11958155
https://brainly.com/question/12155527
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