We have to assume that the pentagon shape is regular so that all sides have equal length. The lateral area is the sum of the areas of 5 triangles, all with the same base length and height.
.. lateral area = 5*(1/2)*(3 cm)*(9 cm) = 67.5 cm^2
.. base area = given as 15.5 cm^2
Total area = lateral area +base area = (67.5 +15.5) cm^2 = 83 cm^2.
Answer: Option 'A' is correct.
Step-by-step explanation:
Since we have given that
The ocean floor directly beneath the boat is at a depth of = 180 meters
Submarine is at an elevation when it is above the ocean's surface = 2 meters
Total distance submarine needs to descends at a constant rate = 180+2=182 m
Rate of submarine descends = 0.4 meters per second.
Time taken by a scientist spend descending after boarding the submarine is given by

so, it must be less than 455 seconds.
therefore, it becomes x<455.
Hence, Option 'A' is correct.
144 square inches are in 1 square foot. 12 inches are in 1 foot. Remember, it says “squared”.So, the answer is 144 sq. inches. Hope this helped!
The area of a triangle with a length of 3.2m and a width of 1.5m is
4.8m