Question

find the total surface area of cube having side of length 7.2 m.
grade 7
do with full explanation and answer to mark you as brainliest​

Answer 1

Answer:

Total surface area of cube = 311.04 m2

Step-by-step explanation:

Total surface area of cube = 6a2

Length of side (a) = 7.2m

TSA = 6a2

= 6*(7.2)^2 m2

= 6 * 51.84 m2

= 311.04 m2

Answer 2

Given :-

• A cube having side of length 7.2 m

To Find :-

• The total surface area of cube

Formula Used :-

♣️ Total Surface Area Or T.S.A Of Cube Formula :

★$\: \pink{ \boxed{ \bf T.S.A_{(Cube)} \: = \: 6 {a}^{2} }}$ ★

Where,

a = Edge length of the Cube

Solution :-

Given :

• a = 7.2 m

According to the question by using formula we get,

$⇢ \: \purple{ \bf T.S.A_{(Cube)} \: = \: 6 {a}^{2}}$

$⇢ \: \sf T.S.A_{(Cube)} \: = \: 6 { (7.2)}^{2}$

$⇢ \: \sf T.S.A_{(Cube)} \: = \: 6 (51.84)$

$⇢ \: \red{\bf T.S.A_{(Cube)} \: = \: 311.06 \: m^{2} }$

∴ The total surface area of a cube is 311.06 m² .

$\:$

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