Aballoon has a circumference of 16 cm. use the circumvents to approximate the surface area of the balloon to the nearest square centimeter. a. 804 cm ^2 b. 326 cm^2 c. 256 cm^2 d. 81 cm^2 !

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

no not all of them.

step-by-step explanation:

some of them have a square base.